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+Mattermost Licensing
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+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/account_migration.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/account_migration.go
new file mode 100644
index 00000000..0db516d7
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/account_migration.go
@@ -0,0 +1,10 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import "github.com/mattermost/mattermost-server/model"
+
+type AccountMigrationInterface interface {
+	MigrateToLdap(fromAuthService string, forignUserFieldNameToMatch string, force bool) *model.AppError
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/brand.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/brand.go
new file mode 100644
index 00000000..fc584a91
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/brand.go
@@ -0,0 +1,14 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+	"mime/multipart"
+)
+
+type BrandInterface interface {
+	SaveBrandImage(*multipart.FileHeader) *model.AppError
+	GetBrandImage() ([]byte, *model.AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/cluster.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/cluster.go
new file mode 100644
index 00000000..b5ef4772
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/cluster.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type ClusterMessageHandler func(msg *model.ClusterMessage)
+
+type ClusterInterface interface {
+	StartInterNodeCommunication()
+	StopInterNodeCommunication()
+	RegisterClusterMessageHandler(event string, crm ClusterMessageHandler)
+	GetClusterId() string
+	IsLeader() bool
+	GetMyClusterInfo() *model.ClusterInfo
+	GetClusterInfos() []*model.ClusterInfo
+	SendClusterMessage(cluster *model.ClusterMessage)
+	NotifyMsg(buf []byte)
+	GetClusterStats() ([]*model.ClusterStats, *model.AppError)
+	GetLogs(page, perPage int) ([]string, *model.AppError)
+	ConfigChanged(previousConfig *model.Config, newConfig *model.Config, sendToOtherServer bool) *model.AppError
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/compliance.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/compliance.go
new file mode 100644
index 00000000..14927bee
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/compliance.go
@@ -0,0 +1,13 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type ComplianceInterface interface {
+	StartComplianceDailyJob()
+	RunComplianceJob(job *model.Compliance) *model.AppError
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/data_retention.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/data_retention.go
new file mode 100644
index 00000000..07f7d387
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/data_retention.go
@@ -0,0 +1,12 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type DataRetentionInterface interface {
+	GetPolicy() (*model.DataRetentionPolicy, *model.AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/elasticsearch.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/elasticsearch.go
new file mode 100644
index 00000000..5582fd4e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/elasticsearch.go
@@ -0,0 +1,20 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"time"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type ElasticsearchInterface interface {
+	Start() *model.AppError
+	IndexPost(post *model.Post, teamId string) *model.AppError
+	SearchPosts(channels *model.ChannelList, searchParams []*model.SearchParams) ([]string, *model.AppError)
+	DeletePost(post *model.Post) *model.AppError
+	TestConfig(cfg *model.Config) *model.AppError
+	PurgeIndexes() *model.AppError
+	DataRetentionDeleteIndexes(cutoff time.Time) *model.AppError
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/emoji.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/emoji.go
new file mode 100644
index 00000000..b8d61e74
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/emoji.go
@@ -0,0 +1,12 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type EmojiInterface interface {
+	CanUserCreateEmoji(string, []*model.TeamMember) bool
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/data_retention.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/data_retention.go
new file mode 100644
index 00000000..73f78e4f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/data_retention.go
@@ -0,0 +1,13 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package jobs
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type DataRetentionJobInterface interface {
+	MakeWorker() model.Worker
+	MakeScheduler() model.Scheduler
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/elasticsearch.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/elasticsearch.go
new file mode 100644
index 00000000..16e0d769
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/elasticsearch.go
@@ -0,0 +1,17 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package jobs
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type ElasticsearchIndexerInterface interface {
+	MakeWorker() model.Worker
+}
+
+type ElasticsearchAggregatorInterface interface {
+	MakeWorker() model.Worker
+	MakeScheduler() model.Scheduler
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/ldap_sync.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/ldap_sync.go
new file mode 100644
index 00000000..5565afe4
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/ldap_sync.go
@@ -0,0 +1,13 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package jobs
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type LdapSyncInterface interface {
+	MakeWorker() model.Worker
+	MakeScheduler() model.Scheduler
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/message_export.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/message_export.go
new file mode 100644
index 00000000..74b0df75
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/jobs/message_export.go
@@ -0,0 +1,13 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package jobs
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type MessageExportJobInterface interface {
+	MakeWorker() model.Worker
+	MakeScheduler() model.Scheduler
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/ldap.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/ldap.go
new file mode 100644
index 00000000..26326b17
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/ldap.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/go-ldap/ldap"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type LdapInterface interface {
+	DoLogin(id string, password string) (*model.User, *model.AppError)
+	GetUser(id string) (*model.User, *model.AppError)
+	GetUserAttributes(id string, attributes []string) (map[string]string, *model.AppError)
+	CheckPassword(id string, password string) *model.AppError
+	SwitchToLdap(userId, ldapId, ldapPassword string) *model.AppError
+	ValidateFilter(filter string) *model.AppError
+	StartSynchronizeJob(waitForJobToFinish bool) (*model.Job, *model.AppError)
+	RunTest() *model.AppError
+	GetAllLdapUsers() ([]*model.User, *model.AppError)
+	UserFromLdapUser(ldapUser *ldap.Entry) *model.User
+	UserHasUpdateFromLdap(existingUser *model.User, currentLdapUser *model.User) bool
+	UpdateLocalLdapUser(existingUser *model.User, currentLdapUser *model.User) *model.User
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/message_export.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/message_export.go
new file mode 100644
index 00000000..ba498cdf
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/message_export.go
@@ -0,0 +1,14 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"context"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type MessageExportInterface interface {
+	StartSynchronizeJob(ctx context.Context, exportFromTimestamp int64) (*model.Job, *model.AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/metrics.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/metrics.go
new file mode 100644
index 00000000..a88fe63c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/metrics.go
@@ -0,0 +1,43 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+type MetricsInterface interface {
+	StartServer()
+	StopServer()
+
+	IncrementPostCreate()
+	IncrementWebhookPost()
+	IncrementPostSentEmail()
+	IncrementPostSentPush()
+	IncrementPostBroadcast()
+	IncrementPostFileAttachment(count int)
+
+	IncrementHttpRequest()
+	IncrementHttpError()
+	ObserveHttpRequestDuration(elapsed float64)
+
+	IncrementClusterRequest()
+	ObserveClusterRequestDuration(elapsed float64)
+
+	IncrementLogin()
+	IncrementLoginFail()
+
+	IncrementEtagHitCounter(route string)
+	IncrementEtagMissCounter(route string)
+
+	IncrementMemCacheHitCounter(cacheName string)
+	IncrementMemCacheMissCounter(cacheName string)
+	IncrementMemCacheMissCounterSession()
+	IncrementMemCacheHitCounterSession()
+
+	IncrementWebsocketEvent(eventType string)
+	IncrementWebSocketBroadcast(eventType string)
+
+	AddMemCacheHitCounter(cacheName string, amount float64)
+	AddMemCacheMissCounter(cacheName string, amount float64)
+
+	IncrementPostsSearchCounter()
+	ObservePostsSearchDuration(elapsed float64)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/mfa.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/mfa.go
new file mode 100644
index 00000000..3afe961e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/mfa.go
@@ -0,0 +1,15 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type MfaInterface interface {
+	GenerateSecret(user *model.User) (string, []byte, *model.AppError)
+	Activate(user *model.User, token string) *model.AppError
+	Deactivate(userId string) *model.AppError
+	ValidateToken(secret, token string) (bool, *model.AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/oauthproviders.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/oauthproviders.go
new file mode 100644
index 00000000..7e24d2a7
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/oauthproviders.go
@@ -0,0 +1,29 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+	"io"
+)
+
+type OauthProvider interface {
+	GetIdentifier() string
+	GetUserFromJson(data io.Reader) *model.User
+	GetAuthDataFromJson(data io.Reader) string
+}
+
+var oauthProviders = make(map[string]OauthProvider)
+
+func RegisterOauthProvider(name string, newProvider OauthProvider) {
+	oauthProviders[name] = newProvider
+}
+
+func GetOauthProvider(name string) OauthProvider {
+	provider, ok := oauthProviders[name]
+	if ok {
+		return provider
+	}
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/einterfaces/saml.go b/vendor/github.com/mattermost/mattermost-server/einterfaces/saml.go
new file mode 100644
index 00000000..833a3d43
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/einterfaces/saml.go
@@ -0,0 +1,15 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package einterfaces
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type SamlInterface interface {
+	ConfigureSP() *model.AppError
+	BuildRequest(relayState string) (*model.SamlAuthRequest, *model.AppError)
+	DoLogin(encodedXML string, relayState map[string]string) (*model.User, *model.AppError)
+	GetMetadata() (string, *model.AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/model/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
+You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
+You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
+webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
+
+We promise that we will not enforce the copyleft provisions in AGPL v3.0 against you if your application (a) does not
+link to the Mattermost Platform directly, but exclusively uses the Mattermost Admin Tools and Configuration Files, and
+(b) you have not modified, added to or adapted the source code of Mattermost in a way that results in the creation of
+a “modified version” or “work based on” Mattermost as these terms are defined in the AGPL v3.0 license.
+
+MATTERMOST TRADEMARK GUIDELINES
+
+Your use of the mark Mattermost is subject to Mattermost, Inc's prior written approval and our organization’s Trademark
+Standards of Use at http://www.mattermost.org/trademark-standards-of-use/. For trademark approval or any questions
+you have about using these trademarks, please email trademark@mattermost.com
+
+------------------------------------------------------------------------------------------------------------------------------
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+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+
+------------------------------------------------------------------------------
+
+The software is released under the terms of the GNU Affero General Public
+License, version 3.
+
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
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+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
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+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
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+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
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+a modified version of its Corresponding Source.  The information must
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+code is in no case prevented or interfered with solely because
+modification has been made.
+
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+specifically for use in, a User Product, and the conveying occurs as
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+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
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+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
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+protocols for communication across the network.
+
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+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
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+
+    d) Limiting the use for publicity purposes of names of licensors or
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+
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+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/model/access.go b/vendor/github.com/mattermost/mattermost-server/model/access.go
new file mode 100644
index 00000000..e9603c78
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/access.go
@@ -0,0 +1,96 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+const (
+	ACCESS_TOKEN_GRANT_TYPE  = "authorization_code"
+	ACCESS_TOKEN_TYPE        = "bearer"
+	REFRESH_TOKEN_GRANT_TYPE = "refresh_token"
+)
+
+type AccessData struct {
+	ClientId     string `json:"client_id"`
+	UserId       string `json:"user_id"`
+	Token        string `json:"token"`
+	RefreshToken string `json:"refresh_token"`
+	RedirectUri  string `json:"redirect_uri"`
+	ExpiresAt    int64  `json:"expires_at"`
+	Scope        string `json:"scope"`
+}
+
+type AccessResponse struct {
+	AccessToken  string `json:"access_token"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int32  `json:"expires_in"`
+	Scope        string `json:"scope"`
+	RefreshToken string `json:"refresh_token"`
+}
+
+// IsValid validates the AccessData and returns an error if it isn't configured
+// correctly.
+func (ad *AccessData) IsValid() *AppError {
+
+	if len(ad.ClientId) == 0 || len(ad.ClientId) > 26 {
+		return NewAppError("AccessData.IsValid", "model.access.is_valid.client_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.UserId) == 0 || len(ad.UserId) > 26 {
+		return NewAppError("AccessData.IsValid", "model.access.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.Token) != 26 {
+		return NewAppError("AccessData.IsValid", "model.access.is_valid.access_token.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.RefreshToken) > 26 {
+		return NewAppError("AccessData.IsValid", "model.access.is_valid.refresh_token.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.RedirectUri) == 0 || len(ad.RedirectUri) > 256 || !IsValidHttpUrl(ad.RedirectUri) {
+		return NewAppError("AccessData.IsValid", "model.access.is_valid.redirect_uri.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (me *AccessData) IsExpired() bool {
+
+	if me.ExpiresAt <= 0 {
+		return false
+	}
+
+	if GetMillis() > me.ExpiresAt {
+		return true
+	}
+
+	return false
+}
+
+func (ad *AccessData) ToJson() string {
+	b, _ := json.Marshal(ad)
+	return string(b)
+}
+
+func AccessDataFromJson(data io.Reader) *AccessData {
+	var ad *AccessData
+	json.NewDecoder(data).Decode(&ad)
+	return ad
+}
+
+func (ar *AccessResponse) ToJson() string {
+	b, _ := json.Marshal(ar)
+	return string(b)
+}
+
+func AccessResponseFromJson(data io.Reader) *AccessResponse {
+	var ar *AccessResponse
+	json.NewDecoder(data).Decode(&ar)
+	return ar
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/analytics_row.go b/vendor/github.com/mattermost/mattermost-server/model/analytics_row.go
new file mode 100644
index 00000000..4615bb79
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/analytics_row.go
@@ -0,0 +1,41 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type AnalyticsRow struct {
+	Name  string  `json:"name"`
+	Value float64 `json:"value"`
+}
+
+type AnalyticsRows []*AnalyticsRow
+
+func (me *AnalyticsRow) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func AnalyticsRowFromJson(data io.Reader) *AnalyticsRow {
+	var me *AnalyticsRow
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
+
+func (me AnalyticsRows) ToJson() string {
+	if b, err := json.Marshal(me); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func AnalyticsRowsFromJson(data io.Reader) AnalyticsRows {
+	var me AnalyticsRows
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/audit.go b/vendor/github.com/mattermost/mattermost-server/model/audit.go
new file mode 100644
index 00000000..e3d1bdf9
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/audit.go
@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type Audit struct {
+	Id        string `json:"id"`
+	CreateAt  int64  `json:"create_at"`
+	UserId    string `json:"user_id"`
+	Action    string `json:"action"`
+	ExtraInfo string `json:"extra_info"`
+	IpAddress string `json:"ip_address"`
+	SessionId string `json:"session_id"`
+}
+
+func (o *Audit) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func AuditFromJson(data io.Reader) *Audit {
+	var o *Audit
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/audits.go b/vendor/github.com/mattermost/mattermost-server/model/audits.go
new file mode 100644
index 00000000..3673eb61
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/audits.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type Audits []Audit
+
+func (o Audits) Etag() string {
+	if len(o) > 0 {
+		// the first in the list is always the most current
+		return Etag(o[0].CreateAt)
+	} else {
+		return ""
+	}
+}
+
+func (o Audits) ToJson() string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func AuditsFromJson(data io.Reader) Audits {
+	var o Audits
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/authorization.go b/vendor/github.com/mattermost/mattermost-server/model/authorization.go
new file mode 100644
index 00000000..9f4e36ea
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/authorization.go
@@ -0,0 +1,522 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+type Permission struct {
+	Id          string `json:"id"`
+	Name        string `json:"name"`
+	Description string `json:"description"`
+}
+
+type Role struct {
+	Id          string   `json:"id"`
+	Name        string   `json:"name"`
+	Description string   `json:"description"`
+	Permissions []string `json:"permissions"`
+}
+
+var PERMISSION_INVITE_USER *Permission
+var PERMISSION_ADD_USER_TO_TEAM *Permission
+var PERMISSION_USE_SLASH_COMMANDS *Permission
+var PERMISSION_MANAGE_SLASH_COMMANDS *Permission
+var PERMISSION_MANAGE_OTHERS_SLASH_COMMANDS *Permission
+var PERMISSION_CREATE_PUBLIC_CHANNEL *Permission
+var PERMISSION_CREATE_PRIVATE_CHANNEL *Permission
+var PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS *Permission
+var PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS *Permission
+var PERMISSION_ASSIGN_SYSTEM_ADMIN_ROLE *Permission
+var PERMISSION_MANAGE_ROLES *Permission
+var PERMISSION_MANAGE_TEAM_ROLES *Permission
+var PERMISSION_MANAGE_CHANNEL_ROLES *Permission
+var PERMISSION_CREATE_DIRECT_CHANNEL *Permission
+var PERMISSION_CREATE_GROUP_CHANNEL *Permission
+var PERMISSION_MANAGE_PUBLIC_CHANNEL_PROPERTIES *Permission
+var PERMISSION_MANAGE_PRIVATE_CHANNEL_PROPERTIES *Permission
+var PERMISSION_LIST_TEAM_CHANNELS *Permission
+var PERMISSION_JOIN_PUBLIC_CHANNELS *Permission
+var PERMISSION_DELETE_PUBLIC_CHANNEL *Permission
+var PERMISSION_DELETE_PRIVATE_CHANNEL *Permission
+var PERMISSION_EDIT_OTHER_USERS *Permission
+var PERMISSION_READ_CHANNEL *Permission
+var PERMISSION_READ_PUBLIC_CHANNEL *Permission
+var PERMISSION_PERMANENT_DELETE_USER *Permission
+var PERMISSION_UPLOAD_FILE *Permission
+var PERMISSION_GET_PUBLIC_LINK *Permission
+var PERMISSION_MANAGE_WEBHOOKS *Permission
+var PERMISSION_MANAGE_OTHERS_WEBHOOKS *Permission
+var PERMISSION_MANAGE_OAUTH *Permission
+var PERMISSION_MANAGE_SYSTEM_WIDE_OAUTH *Permission
+var PERMISSION_CREATE_POST *Permission
+var PERMISSION_CREATE_POST_PUBLIC *Permission
+var PERMISSION_EDIT_POST *Permission
+var PERMISSION_EDIT_OTHERS_POSTS *Permission
+var PERMISSION_DELETE_POST *Permission
+var PERMISSION_DELETE_OTHERS_POSTS *Permission
+var PERMISSION_REMOVE_USER_FROM_TEAM *Permission
+var PERMISSION_CREATE_TEAM *Permission
+var PERMISSION_MANAGE_TEAM *Permission
+var PERMISSION_IMPORT_TEAM *Permission
+var PERMISSION_VIEW_TEAM *Permission
+var PERMISSION_LIST_USERS_WITHOUT_TEAM *Permission
+var PERMISSION_MANAGE_JOBS *Permission
+var PERMISSION_CREATE_USER_ACCESS_TOKEN *Permission
+var PERMISSION_READ_USER_ACCESS_TOKEN *Permission
+var PERMISSION_REVOKE_USER_ACCESS_TOKEN *Permission
+
+// General permission that encompases all system admin functions
+// in the future this could be broken up to allow access to some
+// admin functions but not others
+var PERMISSION_MANAGE_SYSTEM *Permission
+
+const (
+	SYSTEM_USER_ROLE_ID              = "system_user"
+	SYSTEM_ADMIN_ROLE_ID             = "system_admin"
+	SYSTEM_POST_ALL_ROLE_ID          = "system_post_all"
+	SYSTEM_POST_ALL_PUBLIC_ROLE_ID   = "system_post_all_public"
+	SYSTEM_USER_ACCESS_TOKEN_ROLE_ID = "system_user_access_token"
+
+	TEAM_USER_ROLE_ID            = "team_user"
+	TEAM_ADMIN_ROLE_ID           = "team_admin"
+	TEAM_POST_ALL_ROLE_ID        = "team_post_all"
+	TEAM_POST_ALL_PUBLIC_ROLE_ID = "team_post_all_public"
+
+	CHANNEL_USER_ROLE_ID  = "channel_user"
+	CHANNEL_ADMIN_ROLE_ID = "channel_admin"
+	CHANNEL_GUEST_ROLE_ID = "guest"
+)
+
+func initializePermissions() {
+	PERMISSION_INVITE_USER = &Permission{
+		"invite_user",
+		"authentication.permissions.team_invite_user.name",
+		"authentication.permissions.team_invite_user.description",
+	}
+	PERMISSION_ADD_USER_TO_TEAM = &Permission{
+		"add_user_to_team",
+		"authentication.permissions.add_user_to_team.name",
+		"authentication.permissions.add_user_to_team.description",
+	}
+	PERMISSION_USE_SLASH_COMMANDS = &Permission{
+		"use_slash_commands",
+		"authentication.permissions.team_use_slash_commands.name",
+		"authentication.permissions.team_use_slash_commands.description",
+	}
+	PERMISSION_MANAGE_SLASH_COMMANDS = &Permission{
+		"manage_slash_commands",
+		"authentication.permissions.manage_slash_commands.name",
+		"authentication.permissions.manage_slash_commands.description",
+	}
+	PERMISSION_MANAGE_OTHERS_SLASH_COMMANDS = &Permission{
+		"manage_others_slash_commands",
+		"authentication.permissions.manage_others_slash_commands.name",
+		"authentication.permissions.manage_others_slash_commands.description",
+	}
+	PERMISSION_CREATE_PUBLIC_CHANNEL = &Permission{
+		"create_public_channel",
+		"authentication.permissions.create_public_channel.name",
+		"authentication.permissions.create_public_channel.description",
+	}
+	PERMISSION_CREATE_PRIVATE_CHANNEL = &Permission{
+		"create_private_channel",
+		"authentication.permissions.create_private_channel.name",
+		"authentication.permissions.create_private_channel.description",
+	}
+	PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS = &Permission{
+		"manage_public_channel_members",
+		"authentication.permissions.manage_public_channel_members.name",
+		"authentication.permissions.manage_public_channel_members.description",
+	}
+	PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS = &Permission{
+		"manage_private_channel_members",
+		"authentication.permissions.manage_private_channel_members.name",
+		"authentication.permissions.manage_private_channel_members.description",
+	}
+	PERMISSION_ASSIGN_SYSTEM_ADMIN_ROLE = &Permission{
+		"assign_system_admin_role",
+		"authentication.permissions.assign_system_admin_role.name",
+		"authentication.permissions.assign_system_admin_role.description",
+	}
+	PERMISSION_MANAGE_ROLES = &Permission{
+		"manage_roles",
+		"authentication.permissions.manage_roles.name",
+		"authentication.permissions.manage_roles.description",
+	}
+	PERMISSION_MANAGE_TEAM_ROLES = &Permission{
+		"manage_team_roles",
+		"authentication.permissions.manage_team_roles.name",
+		"authentication.permissions.manage_team_roles.description",
+	}
+	PERMISSION_MANAGE_CHANNEL_ROLES = &Permission{
+		"manage_channel_roles",
+		"authentication.permissions.manage_channel_roles.name",
+		"authentication.permissions.manage_channel_roles.description",
+	}
+	PERMISSION_MANAGE_SYSTEM = &Permission{
+		"manage_system",
+		"authentication.permissions.manage_system.name",
+		"authentication.permissions.manage_system.description",
+	}
+	PERMISSION_CREATE_DIRECT_CHANNEL = &Permission{
+		"create_direct_channel",
+		"authentication.permissions.create_direct_channel.name",
+		"authentication.permissions.create_direct_channel.description",
+	}
+	PERMISSION_CREATE_GROUP_CHANNEL = &Permission{
+		"create_group_channel",
+		"authentication.permissions.create_group_channel.name",
+		"authentication.permissions.create_group_channel.description",
+	}
+	PERMISSION_MANAGE_PUBLIC_CHANNEL_PROPERTIES = &Permission{
+		"manage__publicchannel_properties",
+		"authentication.permissions.manage_public_channel_properties.name",
+		"authentication.permissions.manage_public_channel_properties.description",
+	}
+	PERMISSION_MANAGE_PRIVATE_CHANNEL_PROPERTIES = &Permission{
+		"manage_private_channel_properties",
+		"authentication.permissions.manage_private_channel_properties.name",
+		"authentication.permissions.manage_private_channel_properties.description",
+	}
+	PERMISSION_LIST_TEAM_CHANNELS = &Permission{
+		"list_team_channels",
+		"authentication.permissions.list_team_channels.name",
+		"authentication.permissions.list_team_channels.description",
+	}
+	PERMISSION_JOIN_PUBLIC_CHANNELS = &Permission{
+		"join_public_channels",
+		"authentication.permissions.join_public_channels.name",
+		"authentication.permissions.join_public_channels.description",
+	}
+	PERMISSION_DELETE_PUBLIC_CHANNEL = &Permission{
+		"delete_public_channel",
+		"authentication.permissions.delete_public_channel.name",
+		"authentication.permissions.delete_public_channel.description",
+	}
+	PERMISSION_DELETE_PRIVATE_CHANNEL = &Permission{
+		"delete_private_channel",
+		"authentication.permissions.delete_private_channel.name",
+		"authentication.permissions.delete_private_channel.description",
+	}
+	PERMISSION_EDIT_OTHER_USERS = &Permission{
+		"edit_other_users",
+		"authentication.permissions.edit_other_users.name",
+		"authentication.permissions.edit_other_users.description",
+	}
+	PERMISSION_READ_CHANNEL = &Permission{
+		"read_channel",
+		"authentication.permissions.read_channel.name",
+		"authentication.permissions.read_channel.description",
+	}
+	PERMISSION_READ_PUBLIC_CHANNEL = &Permission{
+		"read_public_channel",
+		"authentication.permissions.read_public_channel.name",
+		"authentication.permissions.read_public_channel.description",
+	}
+	PERMISSION_PERMANENT_DELETE_USER = &Permission{
+		"permanent_delete_user",
+		"authentication.permissions.permanent_delete_user.name",
+		"authentication.permissions.permanent_delete_user.description",
+	}
+	PERMISSION_UPLOAD_FILE = &Permission{
+		"upload_file",
+		"authentication.permissions.upload_file.name",
+		"authentication.permissions.upload_file.description",
+	}
+	PERMISSION_GET_PUBLIC_LINK = &Permission{
+		"get_public_link",
+		"authentication.permissions.get_public_link.name",
+		"authentication.permissions.get_public_link.description",
+	}
+	PERMISSION_MANAGE_WEBHOOKS = &Permission{
+		"manage_webhooks",
+		"authentication.permissions.manage_webhooks.name",
+		"authentication.permissions.manage_webhooks.description",
+	}
+	PERMISSION_MANAGE_OTHERS_WEBHOOKS = &Permission{
+		"manage_others_webhooks",
+		"authentication.permissions.manage_others_webhooks.name",
+		"authentication.permissions.manage_others_webhooks.description",
+	}
+	PERMISSION_MANAGE_OAUTH = &Permission{
+		"manage_oauth",
+		"authentication.permissions.manage_oauth.name",
+		"authentication.permissions.manage_oauth.description",
+	}
+	PERMISSION_MANAGE_SYSTEM_WIDE_OAUTH = &Permission{
+		"manage_sytem_wide_oauth",
+		"authentication.permissions.manage_sytem_wide_oauth.name",
+		"authentication.permissions.manage_sytem_wide_oauth.description",
+	}
+	PERMISSION_CREATE_POST = &Permission{
+		"create_post",
+		"authentication.permissions.create_post.name",
+		"authentication.permissions.create_post.description",
+	}
+	PERMISSION_CREATE_POST_PUBLIC = &Permission{
+		"create_post_public",
+		"authentication.permissions.create_post_public.name",
+		"authentication.permissions.create_post_public.description",
+	}
+	PERMISSION_EDIT_POST = &Permission{
+		"edit_post",
+		"authentication.permissions.edit_post.name",
+		"authentication.permissions.edit_post.description",
+	}
+	PERMISSION_EDIT_OTHERS_POSTS = &Permission{
+		"edit_others_posts",
+		"authentication.permissions.edit_others_posts.name",
+		"authentication.permissions.edit_others_posts.description",
+	}
+	PERMISSION_DELETE_POST = &Permission{
+		"delete_post",
+		"authentication.permissions.delete_post.name",
+		"authentication.permissions.delete_post.description",
+	}
+	PERMISSION_DELETE_OTHERS_POSTS = &Permission{
+		"delete_others_posts",
+		"authentication.permissions.delete_others_posts.name",
+		"authentication.permissions.delete_others_posts.description",
+	}
+	PERMISSION_REMOVE_USER_FROM_TEAM = &Permission{
+		"remove_user_from_team",
+		"authentication.permissions.remove_user_from_team.name",
+		"authentication.permissions.remove_user_from_team.description",
+	}
+	PERMISSION_CREATE_TEAM = &Permission{
+		"create_team",
+		"authentication.permissions.create_team.name",
+		"authentication.permissions.create_team.description",
+	}
+	PERMISSION_MANAGE_TEAM = &Permission{
+		"manage_team",
+		"authentication.permissions.manage_team.name",
+		"authentication.permissions.manage_team.description",
+	}
+	PERMISSION_IMPORT_TEAM = &Permission{
+		"import_team",
+		"authentication.permissions.import_team.name",
+		"authentication.permissions.import_team.description",
+	}
+	PERMISSION_VIEW_TEAM = &Permission{
+		"view_team",
+		"authentication.permissions.view_team.name",
+		"authentication.permissions.view_team.description",
+	}
+	PERMISSION_LIST_USERS_WITHOUT_TEAM = &Permission{
+		"list_users_without_team",
+		"authentication.permissions.list_users_without_team.name",
+		"authentication.permissions.list_users_without_team.description",
+	}
+	PERMISSION_CREATE_USER_ACCESS_TOKEN = &Permission{
+		"create_user_access_token",
+		"authentication.permissions.create_user_access_token.name",
+		"authentication.permissions.create_user_access_token.description",
+	}
+	PERMISSION_READ_USER_ACCESS_TOKEN = &Permission{
+		"read_user_access_token",
+		"authentication.permissions.read_user_access_token.name",
+		"authentication.permissions.read_user_access_token.description",
+	}
+	PERMISSION_REVOKE_USER_ACCESS_TOKEN = &Permission{
+		"revoke_user_access_token",
+		"authentication.permissions.revoke_user_access_token.name",
+		"authentication.permissions.revoke_user_access_token.description",
+	}
+	PERMISSION_MANAGE_JOBS = &Permission{
+		"manage_jobs",
+		"authentication.permisssions.manage_jobs.name",
+		"authentication.permisssions.manage_jobs.description",
+	}
+}
+
+var DefaultRoles map[string]*Role
+
+func initializeDefaultRoles() {
+	DefaultRoles = make(map[string]*Role)
+
+	DefaultRoles[CHANNEL_USER_ROLE_ID] = &Role{
+		"channel_user",
+		"authentication.roles.channel_user.name",
+		"authentication.roles.channel_user.description",
+		[]string{
+			PERMISSION_READ_CHANNEL.Id,
+			PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS.Id,
+			PERMISSION_UPLOAD_FILE.Id,
+			PERMISSION_GET_PUBLIC_LINK.Id,
+			PERMISSION_CREATE_POST.Id,
+			PERMISSION_EDIT_POST.Id,
+			PERMISSION_USE_SLASH_COMMANDS.Id,
+		},
+	}
+
+	DefaultRoles[CHANNEL_ADMIN_ROLE_ID] = &Role{
+		"channel_admin",
+		"authentication.roles.channel_admin.name",
+		"authentication.roles.channel_admin.description",
+		[]string{
+			PERMISSION_MANAGE_CHANNEL_ROLES.Id,
+		},
+	}
+
+	DefaultRoles[CHANNEL_GUEST_ROLE_ID] = &Role{
+		"guest",
+		"authentication.roles.global_guest.name",
+		"authentication.roles.global_guest.description",
+		[]string{},
+	}
+
+	DefaultRoles[TEAM_USER_ROLE_ID] = &Role{
+		"team_user",
+		"authentication.roles.team_user.name",
+		"authentication.roles.team_user.description",
+		[]string{
+			PERMISSION_LIST_TEAM_CHANNELS.Id,
+			PERMISSION_JOIN_PUBLIC_CHANNELS.Id,
+			PERMISSION_READ_PUBLIC_CHANNEL.Id,
+			PERMISSION_VIEW_TEAM.Id,
+		},
+	}
+
+	DefaultRoles[TEAM_POST_ALL_ROLE_ID] = &Role{
+		"team_post_all",
+		"authentication.roles.team_post_all.name",
+		"authentication.roles.team_post_all.description",
+		[]string{
+			PERMISSION_CREATE_POST.Id,
+		},
+	}
+
+	DefaultRoles[TEAM_POST_ALL_PUBLIC_ROLE_ID] = &Role{
+		"team_post_all_public",
+		"authentication.roles.team_post_all_public.name",
+		"authentication.roles.team_post_all_public.description",
+		[]string{
+			PERMISSION_CREATE_POST_PUBLIC.Id,
+		},
+	}
+
+	DefaultRoles[TEAM_ADMIN_ROLE_ID] = &Role{
+		"team_admin",
+		"authentication.roles.team_admin.name",
+		"authentication.roles.team_admin.description",
+		[]string{
+			PERMISSION_EDIT_OTHERS_POSTS.Id,
+			PERMISSION_REMOVE_USER_FROM_TEAM.Id,
+			PERMISSION_MANAGE_TEAM.Id,
+			PERMISSION_IMPORT_TEAM.Id,
+			PERMISSION_MANAGE_TEAM_ROLES.Id,
+			PERMISSION_MANAGE_CHANNEL_ROLES.Id,
+			PERMISSION_MANAGE_OTHERS_WEBHOOKS.Id,
+			PERMISSION_MANAGE_SLASH_COMMANDS.Id,
+			PERMISSION_MANAGE_OTHERS_SLASH_COMMANDS.Id,
+			PERMISSION_MANAGE_WEBHOOKS.Id,
+		},
+	}
+
+	DefaultRoles[SYSTEM_USER_ROLE_ID] = &Role{
+		"system_user",
+		"authentication.roles.global_user.name",
+		"authentication.roles.global_user.description",
+		[]string{
+			PERMISSION_CREATE_DIRECT_CHANNEL.Id,
+			PERMISSION_CREATE_GROUP_CHANNEL.Id,
+			PERMISSION_PERMANENT_DELETE_USER.Id,
+		},
+	}
+
+	DefaultRoles[SYSTEM_POST_ALL_ROLE_ID] = &Role{
+		"system_post_all",
+		"authentication.roles.system_post_all.name",
+		"authentication.roles.system_post_all.description",
+		[]string{
+			PERMISSION_CREATE_POST.Id,
+		},
+	}
+
+	DefaultRoles[SYSTEM_POST_ALL_PUBLIC_ROLE_ID] = &Role{
+		"system_post_all_public",
+		"authentication.roles.system_post_all_public.name",
+		"authentication.roles.system_post_all_public.description",
+		[]string{
+			PERMISSION_CREATE_POST_PUBLIC.Id,
+		},
+	}
+
+	DefaultRoles[SYSTEM_USER_ACCESS_TOKEN_ROLE_ID] = &Role{
+		"system_user_access_token",
+		"authentication.roles.system_user_access_token.name",
+		"authentication.roles.system_user_access_token.description",
+		[]string{
+			PERMISSION_CREATE_USER_ACCESS_TOKEN.Id,
+			PERMISSION_READ_USER_ACCESS_TOKEN.Id,
+			PERMISSION_REVOKE_USER_ACCESS_TOKEN.Id,
+		},
+	}
+
+	DefaultRoles[SYSTEM_ADMIN_ROLE_ID] = &Role{
+		"system_admin",
+		"authentication.roles.global_admin.name",
+		"authentication.roles.global_admin.description",
+		// System admins can do anything channel and team admins can do
+		// plus everything members of teams and channels can do to all teams
+		// and channels on the system
+		append(
+			append(
+				append(
+					append(
+						[]string{
+							PERMISSION_ASSIGN_SYSTEM_ADMIN_ROLE.Id,
+							PERMISSION_MANAGE_SYSTEM.Id,
+							PERMISSION_MANAGE_ROLES.Id,
+							PERMISSION_MANAGE_PUBLIC_CHANNEL_PROPERTIES.Id,
+							PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS.Id,
+							PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS.Id,
+							PERMISSION_DELETE_PUBLIC_CHANNEL.Id,
+							PERMISSION_CREATE_PUBLIC_CHANNEL.Id,
+							PERMISSION_MANAGE_PRIVATE_CHANNEL_PROPERTIES.Id,
+							PERMISSION_DELETE_PRIVATE_CHANNEL.Id,
+							PERMISSION_CREATE_PRIVATE_CHANNEL.Id,
+							PERMISSION_MANAGE_SYSTEM_WIDE_OAUTH.Id,
+							PERMISSION_MANAGE_OTHERS_WEBHOOKS.Id,
+							PERMISSION_EDIT_OTHER_USERS.Id,
+							PERMISSION_MANAGE_OAUTH.Id,
+							PERMISSION_INVITE_USER.Id,
+							PERMISSION_DELETE_POST.Id,
+							PERMISSION_DELETE_OTHERS_POSTS.Id,
+							PERMISSION_CREATE_TEAM.Id,
+							PERMISSION_ADD_USER_TO_TEAM.Id,
+							PERMISSION_LIST_USERS_WITHOUT_TEAM.Id,
+							PERMISSION_MANAGE_JOBS.Id,
+							PERMISSION_CREATE_POST_PUBLIC.Id,
+							PERMISSION_CREATE_USER_ACCESS_TOKEN.Id,
+							PERMISSION_READ_USER_ACCESS_TOKEN.Id,
+							PERMISSION_REVOKE_USER_ACCESS_TOKEN.Id,
+						},
+						DefaultRoles[TEAM_USER_ROLE_ID].Permissions...,
+					),
+					DefaultRoles[CHANNEL_USER_ROLE_ID].Permissions...,
+				),
+				DefaultRoles[TEAM_ADMIN_ROLE_ID].Permissions...,
+			),
+			DefaultRoles[CHANNEL_ADMIN_ROLE_ID].Permissions...,
+		),
+	}
+}
+
+func RoleIdsToString(roles []string) string {
+	output := ""
+	for _, role := range roles {
+		output += role + ", "
+	}
+
+	if output == "" {
+		return "[<NO ROLES>]"
+	}
+
+	return output[:len(output)-1]
+}
+
+func init() {
+	initializePermissions()
+	initializeDefaultRoles()
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/authorize.go b/vendor/github.com/mattermost/mattermost-server/model/authorize.go
new file mode 100644
index 00000000..2296e7e2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/authorize.go
@@ -0,0 +1,141 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+const (
+	AUTHCODE_EXPIRE_TIME   = 60 * 10 // 10 minutes
+	AUTHCODE_RESPONSE_TYPE = "code"
+	DEFAULT_SCOPE          = "user"
+)
+
+type AuthData struct {
+	ClientId    string `json:"client_id"`
+	UserId      string `json:"user_id"`
+	Code        string `json:"code"`
+	ExpiresIn   int32  `json:"expires_in"`
+	CreateAt    int64  `json:"create_at"`
+	RedirectUri string `json:"redirect_uri"`
+	State       string `json:"state"`
+	Scope       string `json:"scope"`
+}
+
+type AuthorizeRequest struct {
+	ResponseType string `json:"response_type"`
+	ClientId     string `json:"client_id"`
+	RedirectUri  string `json:"redirect_uri"`
+	Scope        string `json:"scope"`
+	State        string `json:"state"`
+}
+
+// IsValid validates the AuthData and returns an error if it isn't configured
+// correctly.
+func (ad *AuthData) IsValid() *AppError {
+
+	if len(ad.ClientId) != 26 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.client_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.UserId) != 26 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ad.Code) == 0 || len(ad.Code) > 128 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.auth_code.app_error", nil, "client_id="+ad.ClientId, http.StatusBadRequest)
+	}
+
+	if ad.ExpiresIn == 0 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.expires.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if ad.CreateAt <= 0 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.create_at.app_error", nil, "client_id="+ad.ClientId, http.StatusBadRequest)
+	}
+
+	if len(ad.RedirectUri) == 0 || len(ad.RedirectUri) > 256 || !IsValidHttpUrl(ad.RedirectUri) {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.redirect_uri.app_error", nil, "client_id="+ad.ClientId, http.StatusBadRequest)
+	}
+
+	if len(ad.State) > 128 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.state.app_error", nil, "client_id="+ad.ClientId, http.StatusBadRequest)
+	}
+
+	if len(ad.Scope) > 128 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.scope.app_error", nil, "client_id="+ad.ClientId, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+// IsValid validates the AuthorizeRequest and returns an error if it isn't configured
+// correctly.
+func (ar *AuthorizeRequest) IsValid() *AppError {
+
+	if len(ar.ClientId) != 26 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.client_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ar.ResponseType) == 0 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.response_type.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ar.RedirectUri) == 0 || len(ar.RedirectUri) > 256 || !IsValidHttpUrl(ar.RedirectUri) {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.redirect_uri.app_error", nil, "client_id="+ar.ClientId, http.StatusBadRequest)
+	}
+
+	if len(ar.State) > 128 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.state.app_error", nil, "client_id="+ar.ClientId, http.StatusBadRequest)
+	}
+
+	if len(ar.Scope) > 128 {
+		return NewAppError("AuthData.IsValid", "model.authorize.is_valid.scope.app_error", nil, "client_id="+ar.ClientId, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (ad *AuthData) PreSave() {
+	if ad.ExpiresIn == 0 {
+		ad.ExpiresIn = AUTHCODE_EXPIRE_TIME
+	}
+
+	if ad.CreateAt == 0 {
+		ad.CreateAt = GetMillis()
+	}
+
+	if len(ad.Scope) == 0 {
+		ad.Scope = DEFAULT_SCOPE
+	}
+}
+
+func (ad *AuthData) ToJson() string {
+	b, _ := json.Marshal(ad)
+	return string(b)
+}
+
+func AuthDataFromJson(data io.Reader) *AuthData {
+	var ad *AuthData
+	json.NewDecoder(data).Decode(&ad)
+	return ad
+}
+
+func (ar *AuthorizeRequest) ToJson() string {
+	b, _ := json.Marshal(ar)
+	return string(b)
+}
+
+func AuthorizeRequestFromJson(data io.Reader) *AuthorizeRequest {
+	var ar *AuthorizeRequest
+	json.NewDecoder(data).Decode(&ar)
+	return ar
+}
+
+func (ad *AuthData) IsExpired() bool {
+	return GetMillis() > ad.CreateAt+int64(ad.ExpiresIn*1000)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/builtin.go b/vendor/github.com/mattermost/mattermost-server/model/builtin.go
new file mode 100644
index 00000000..5dd00a96
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/builtin.go
@@ -0,0 +1,9 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+func NewBool(b bool) *bool       { return &b }
+func NewInt(n int) *int          { return &n }
+func NewInt64(n int64) *int64    { return &n }
+func NewString(s string) *string { return &s }
diff --git a/vendor/github.com/mattermost/mattermost-server/model/bundle_info.go b/vendor/github.com/mattermost/mattermost-server/model/bundle_info.go
new file mode 100644
index 00000000..6965159c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/bundle_info.go
@@ -0,0 +1,23 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+type BundleInfo struct {
+	Path string
+
+	Manifest      *Manifest
+	ManifestPath  string
+	ManifestError error
+}
+
+// Returns bundle info for the given path. The return value is never nil.
+func BundleInfoForPath(path string) *BundleInfo {
+	m, mpath, err := FindManifest(path)
+	return &BundleInfo{
+		Path:          path,
+		Manifest:      m,
+		ManifestPath:  mpath,
+		ManifestError: err,
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel.go b/vendor/github.com/mattermost/mattermost-server/model/channel.go
new file mode 100644
index 00000000..ce812be3
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel.go
@@ -0,0 +1,208 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"crypto/sha1"
+	"encoding/hex"
+	"encoding/json"
+	"io"
+	"net/http"
+	"sort"
+	"strings"
+	"unicode/utf8"
+)
+
+const (
+	CHANNEL_OPEN                   = "O"
+	CHANNEL_PRIVATE                = "P"
+	CHANNEL_DIRECT                 = "D"
+	CHANNEL_GROUP                  = "G"
+	CHANNEL_GROUP_MAX_USERS        = 8
+	CHANNEL_GROUP_MIN_USERS        = 3
+	DEFAULT_CHANNEL                = "town-square"
+	CHANNEL_DISPLAY_NAME_MAX_RUNES = 64
+	CHANNEL_NAME_MIN_LENGTH        = 2
+	CHANNEL_NAME_MAX_LENGTH        = 64
+	CHANNEL_NAME_UI_MAX_LENGTH     = 22
+	CHANNEL_HEADER_MAX_RUNES       = 1024
+	CHANNEL_PURPOSE_MAX_RUNES      = 250
+	CHANNEL_CACHE_SIZE             = 25000
+)
+
+type Channel struct {
+	Id            string `json:"id"`
+	CreateAt      int64  `json:"create_at"`
+	UpdateAt      int64  `json:"update_at"`
+	DeleteAt      int64  `json:"delete_at"`
+	TeamId        string `json:"team_id"`
+	Type          string `json:"type"`
+	DisplayName   string `json:"display_name"`
+	Name          string `json:"name"`
+	Header        string `json:"header"`
+	Purpose       string `json:"purpose"`
+	LastPostAt    int64  `json:"last_post_at"`
+	TotalMsgCount int64  `json:"total_msg_count"`
+	ExtraUpdateAt int64  `json:"extra_update_at"`
+	CreatorId     string `json:"creator_id"`
+}
+
+type ChannelPatch struct {
+	DisplayName *string `json:"display_name"`
+	Name        *string `json:"name"`
+	Header      *string `json:"header"`
+	Purpose     *string `json:"purpose"`
+}
+
+func (o *Channel) DeepCopy() *Channel {
+	copy := *o
+	return &copy
+}
+
+func (o *Channel) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *ChannelPatch) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelFromJson(data io.Reader) *Channel {
+	var o *Channel
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func ChannelPatchFromJson(data io.Reader) *ChannelPatch {
+	var o *ChannelPatch
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Channel) Etag() string {
+	return Etag(o.Id, o.UpdateAt)
+}
+
+func (o *Channel) StatsEtag() string {
+	return Etag(o.Id, o.ExtraUpdateAt)
+}
+
+func (o *Channel) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.DisplayName) > CHANNEL_DISPLAY_NAME_MAX_RUNES {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.display_name.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if !IsValidChannelIdentifier(o.Name) {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.2_or_more.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if !(o.Type == CHANNEL_OPEN || o.Type == CHANNEL_PRIVATE || o.Type == CHANNEL_DIRECT || o.Type == CHANNEL_GROUP) {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.type.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.Header) > CHANNEL_HEADER_MAX_RUNES {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.header.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.Purpose) > CHANNEL_PURPOSE_MAX_RUNES {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.purpose.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.CreatorId) > 26 {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.creator_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *Channel) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	o.CreateAt = GetMillis()
+	o.UpdateAt = o.CreateAt
+	o.ExtraUpdateAt = o.CreateAt
+}
+
+func (o *Channel) PreUpdate() {
+	o.UpdateAt = GetMillis()
+}
+
+func (o *Channel) ExtraUpdated() {
+	o.ExtraUpdateAt = GetMillis()
+}
+
+func (o *Channel) IsGroupOrDirect() bool {
+	return o.Type == CHANNEL_DIRECT || o.Type == CHANNEL_GROUP
+}
+
+func (o *Channel) Patch(patch *ChannelPatch) {
+	if patch.DisplayName != nil {
+		o.DisplayName = *patch.DisplayName
+	}
+
+	if patch.Name != nil {
+		o.Name = *patch.Name
+	}
+
+	if patch.Header != nil {
+		o.Header = *patch.Header
+	}
+
+	if patch.Purpose != nil {
+		o.Purpose = *patch.Purpose
+	}
+}
+
+func GetDMNameFromIds(userId1, userId2 string) string {
+	if userId1 > userId2 {
+		return userId2 + "__" + userId1
+	} else {
+		return userId1 + "__" + userId2
+	}
+}
+
+func GetGroupDisplayNameFromUsers(users []*User, truncate bool) string {
+	usernames := make([]string, len(users))
+	for index, user := range users {
+		usernames[index] = user.Username
+	}
+
+	sort.Strings(usernames)
+
+	name := strings.Join(usernames, ", ")
+
+	if truncate && len(name) > CHANNEL_NAME_MAX_LENGTH {
+		name = name[:CHANNEL_NAME_MAX_LENGTH]
+	}
+
+	return name
+}
+
+func GetGroupNameFromUserIds(userIds []string) string {
+	sort.Strings(userIds)
+
+	h := sha1.New()
+	for _, id := range userIds {
+		io.WriteString(h, id)
+	}
+
+	return hex.EncodeToString(h.Sum(nil))
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_count.go b/vendor/github.com/mattermost/mattermost-server/model/channel_count.go
new file mode 100644
index 00000000..8c6d8dd0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_count.go
@@ -0,0 +1,54 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"crypto/md5"
+	"encoding/json"
+	"fmt"
+	"io"
+	"sort"
+	"strconv"
+)
+
+type ChannelCounts struct {
+	Counts      map[string]int64 `json:"counts"`
+	UpdateTimes map[string]int64 `json:"update_times"`
+}
+
+func (o *ChannelCounts) Etag() string {
+
+	ids := []string{}
+	for id := range o.Counts {
+		ids = append(ids, id)
+	}
+	sort.Strings(ids)
+
+	str := ""
+	for _, id := range ids {
+		str += id + strconv.FormatInt(o.Counts[id], 10)
+	}
+
+	md5Counts := fmt.Sprintf("%x", md5.Sum([]byte(str)))
+
+	var update int64 = 0
+	for _, u := range o.UpdateTimes {
+		if u > update {
+			update = u
+		}
+	}
+
+	return Etag(md5Counts, update)
+}
+
+func (o *ChannelCounts) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelCountsFromJson(data io.Reader) *ChannelCounts {
+	var o *ChannelCounts
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_data.go b/vendor/github.com/mattermost/mattermost-server/model/channel_data.go
new file mode 100644
index 00000000..aae0a149
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_data.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelData struct {
+	Channel *Channel       `json:"channel"`
+	Member  *ChannelMember `json:"member"`
+}
+
+func (o *ChannelData) Etag() string {
+	var mt int64 = 0
+	if o.Member != nil {
+		mt = o.Member.LastUpdateAt
+	}
+
+	return Etag(o.Channel.Id, o.Channel.UpdateAt, o.Channel.LastPostAt, mt)
+}
+
+func (o *ChannelData) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelDataFromJson(data io.Reader) *ChannelData {
+	var o *ChannelData
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_list.go b/vendor/github.com/mattermost/mattermost-server/model/channel_list.go
new file mode 100644
index 00000000..1b3bda46
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_list.go
@@ -0,0 +1,53 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelList []*Channel
+
+func (o *ChannelList) ToJson() string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func (o *ChannelList) Etag() string {
+
+	id := "0"
+	var t int64 = 0
+	var delta int64 = 0
+
+	for _, v := range *o {
+		if v.LastPostAt > t {
+			t = v.LastPostAt
+			id = v.Id
+		}
+
+		if v.UpdateAt > t {
+			t = v.UpdateAt
+			id = v.Id
+		}
+
+	}
+
+	return Etag(id, t, delta, len(*o))
+}
+
+func ChannelListFromJson(data io.Reader) *ChannelList {
+	var o *ChannelList
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func ChannelSliceFromJson(data io.Reader) []*Channel {
+	var o []*Channel
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_member.go b/vendor/github.com/mattermost/mattermost-server/model/channel_member.go
new file mode 100644
index 00000000..e9895aea
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_member.go
@@ -0,0 +1,148 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+)
+
+const (
+	CHANNEL_NOTIFY_DEFAULT      = "default"
+	CHANNEL_NOTIFY_ALL          = "all"
+	CHANNEL_NOTIFY_MENTION      = "mention"
+	CHANNEL_NOTIFY_NONE         = "none"
+	CHANNEL_MARK_UNREAD_ALL     = "all"
+	CHANNEL_MARK_UNREAD_MENTION = "mention"
+)
+
+type ChannelUnread struct {
+	TeamId       string    `json:"team_id"`
+	ChannelId    string    `json:"channel_id"`
+	MsgCount     int64     `json:"msg_count"`
+	MentionCount int64     `json:"mention_count"`
+	NotifyProps  StringMap `json:"-"`
+}
+
+type ChannelMember struct {
+	ChannelId    string    `json:"channel_id"`
+	UserId       string    `json:"user_id"`
+	Roles        string    `json:"roles"`
+	LastViewedAt int64     `json:"last_viewed_at"`
+	MsgCount     int64     `json:"msg_count"`
+	MentionCount int64     `json:"mention_count"`
+	NotifyProps  StringMap `json:"notify_props"`
+	LastUpdateAt int64     `json:"last_update_at"`
+}
+
+type ChannelMembers []ChannelMember
+
+func (o *ChannelMembers) ToJson() string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func (o *ChannelUnread) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelMembersFromJson(data io.Reader) *ChannelMembers {
+	var o *ChannelMembers
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func ChannelUnreadFromJson(data io.Reader) *ChannelUnread {
+	var o *ChannelUnread
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *ChannelMember) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelMemberFromJson(data io.Reader) *ChannelMember {
+	var o *ChannelMember
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *ChannelMember) IsValid() *AppError {
+
+	if len(o.ChannelId) != 26 {
+		return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.channel_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.UserId) != 26 {
+		return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	notifyLevel := o.NotifyProps[DESKTOP_NOTIFY_PROP]
+	if len(notifyLevel) > 20 || !IsChannelNotifyLevelValid(notifyLevel) {
+		return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.notify_level.app_error", nil, "notify_level="+notifyLevel, http.StatusBadRequest)
+	}
+
+	markUnreadLevel := o.NotifyProps[MARK_UNREAD_NOTIFY_PROP]
+	if len(markUnreadLevel) > 20 || !IsChannelMarkUnreadLevelValid(markUnreadLevel) {
+		return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.unread_level.app_error", nil, "mark_unread_level="+markUnreadLevel, http.StatusBadRequest)
+	}
+
+	if pushLevel, ok := o.NotifyProps[PUSH_NOTIFY_PROP]; ok {
+		if len(pushLevel) > 20 || !IsChannelNotifyLevelValid(pushLevel) {
+			return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.push_level.app_error", nil, "push_notification_level="+pushLevel, http.StatusBadRequest)
+		}
+	}
+
+	if sendEmail, ok := o.NotifyProps[EMAIL_NOTIFY_PROP]; ok {
+		if len(sendEmail) > 20 || !IsSendEmailValid(sendEmail) {
+			return NewAppError("ChannelMember.IsValid", "model.channel_member.is_valid.email_value.app_error", nil, "push_notification_level="+sendEmail, http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+func (o *ChannelMember) PreSave() {
+	o.LastUpdateAt = GetMillis()
+}
+
+func (o *ChannelMember) PreUpdate() {
+	o.LastUpdateAt = GetMillis()
+}
+
+func (o *ChannelMember) GetRoles() []string {
+	return strings.Fields(o.Roles)
+}
+
+func IsChannelNotifyLevelValid(notifyLevel string) bool {
+	return notifyLevel == CHANNEL_NOTIFY_DEFAULT ||
+		notifyLevel == CHANNEL_NOTIFY_ALL ||
+		notifyLevel == CHANNEL_NOTIFY_MENTION ||
+		notifyLevel == CHANNEL_NOTIFY_NONE
+}
+
+func IsChannelMarkUnreadLevelValid(markUnreadLevel string) bool {
+	return markUnreadLevel == CHANNEL_MARK_UNREAD_ALL || markUnreadLevel == CHANNEL_MARK_UNREAD_MENTION
+}
+
+func IsSendEmailValid(sendEmail string) bool {
+	return sendEmail == CHANNEL_NOTIFY_DEFAULT || sendEmail == "true" || sendEmail == "false"
+}
+
+func GetDefaultChannelNotifyProps() StringMap {
+	return StringMap{
+		DESKTOP_NOTIFY_PROP:     CHANNEL_NOTIFY_DEFAULT,
+		MARK_UNREAD_NOTIFY_PROP: CHANNEL_MARK_UNREAD_ALL,
+		PUSH_NOTIFY_PROP:        CHANNEL_NOTIFY_DEFAULT,
+		EMAIL_NOTIFY_PROP:       CHANNEL_NOTIFY_DEFAULT,
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_member_history.go b/vendor/github.com/mattermost/mattermost-server/model/channel_member_history.go
new file mode 100644
index 00000000..47c59d54
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_member_history.go
@@ -0,0 +1,15 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+type ChannelMemberHistory struct {
+	ChannelId string
+	UserId    string
+	JoinTime  int64
+	LeaveTime *int64
+
+	// these two fields are never set in the database - when we SELECT, we join on Users to get them
+	UserEmail string `db:"Email"`
+	Username  string
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_search.go b/vendor/github.com/mattermost/mattermost-server/model/channel_search.go
new file mode 100644
index 00000000..593cf669
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_search.go
@@ -0,0 +1,26 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelSearch struct {
+	Term string `json:"term"`
+}
+
+// ToJson convert a Channel to a json string
+func (c *ChannelSearch) ToJson() string {
+	b, _ := json.Marshal(c)
+	return string(b)
+}
+
+// ChannelSearchFromJson will decode the input and return a Channel
+func ChannelSearchFromJson(data io.Reader) *ChannelSearch {
+	var cs *ChannelSearch
+	json.NewDecoder(data).Decode(&cs)
+	return cs
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_stats.go b/vendor/github.com/mattermost/mattermost-server/model/channel_stats.go
new file mode 100644
index 00000000..21af920f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_stats.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelStats struct {
+	ChannelId   string `json:"channel_id"`
+	MemberCount int64  `json:"member_count"`
+}
+
+func (o *ChannelStats) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelStatsFromJson(data io.Reader) *ChannelStats {
+	var o *ChannelStats
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/channel_view.go b/vendor/github.com/mattermost/mattermost-server/model/channel_view.go
new file mode 100644
index 00000000..650d14ce
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/channel_view.go
@@ -0,0 +1,41 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelView struct {
+	ChannelId     string `json:"channel_id"`
+	PrevChannelId string `json:"prev_channel_id"`
+}
+
+func (o *ChannelView) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelViewFromJson(data io.Reader) *ChannelView {
+	var o *ChannelView
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+type ChannelViewResponse struct {
+	Status            string           `json:"status"`
+	LastViewedAtTimes map[string]int64 `json:"last_viewed_at_times"`
+}
+
+func (o *ChannelViewResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ChannelViewResponseFromJson(data io.Reader) *ChannelViewResponse {
+	var o *ChannelViewResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/client.go b/vendor/github.com/mattermost/mattermost-server/model/client.go
new file mode 100644
index 00000000..ef890b59
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/client.go
@@ -0,0 +1,2379 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	l4g "github.com/alecthomas/log4go"
+)
+
+var UsedApiV3 *int32 = new(int32)
+
+const (
+	HEADER_REQUEST_ID         = "X-Request-ID"
+	HEADER_VERSION_ID         = "X-Version-ID"
+	HEADER_CLUSTER_ID         = "X-Cluster-ID"
+	HEADER_ETAG_SERVER        = "ETag"
+	HEADER_ETAG_CLIENT        = "If-None-Match"
+	HEADER_FORWARDED          = "X-Forwarded-For"
+	HEADER_REAL_IP            = "X-Real-IP"
+	HEADER_FORWARDED_PROTO    = "X-Forwarded-Proto"
+	HEADER_TOKEN              = "token"
+	HEADER_BEARER             = "BEARER"
+	HEADER_AUTH               = "Authorization"
+	HEADER_REQUESTED_WITH     = "X-Requested-With"
+	HEADER_REQUESTED_WITH_XML = "XMLHttpRequest"
+	STATUS                    = "status"
+	STATUS_OK                 = "OK"
+	STATUS_FAIL               = "FAIL"
+	STATUS_REMOVE             = "REMOVE"
+
+	CLIENT_DIR = "client"
+
+	API_URL_SUFFIX_V1 = "/api/v1"
+	API_URL_SUFFIX_V3 = "/api/v3"
+	API_URL_SUFFIX_V4 = "/api/v4"
+	API_URL_SUFFIX    = API_URL_SUFFIX_V4
+)
+
+type Result struct {
+	RequestId string
+	Etag      string
+	Data      interface{}
+}
+
+type ResponseMetadata struct {
+	StatusCode int
+	Error      *AppError
+	RequestId  string
+	Etag       string
+}
+
+type Client struct {
+	Url           string       // The location of the server like "http://localhost:8065"
+	ApiUrl        string       // The api location of the server like "http://localhost:8065/api/v3"
+	HttpClient    *http.Client // The http client
+	AuthToken     string
+	AuthType      string
+	TeamId        string
+	RequestId     string
+	Etag          string
+	ServerVersion string
+}
+
+// NewClient constructs a new client with convienence methods for talking to
+// the server.
+func NewClient(url string) *Client {
+	return &Client{url, url + API_URL_SUFFIX_V3, &http.Client{}, "", "", "", "", "", ""}
+}
+
+func closeBody(r *http.Response) {
+	if r.Body != nil {
+		ioutil.ReadAll(r.Body)
+		r.Body.Close()
+	}
+}
+
+func (c *Client) SetOAuthToken(token string) {
+	c.AuthToken = token
+	c.AuthType = HEADER_TOKEN
+}
+
+func (c *Client) ClearOAuthToken() {
+	c.AuthToken = ""
+	c.AuthType = HEADER_BEARER
+}
+
+func (c *Client) SetTeamId(teamId string) {
+	c.TeamId = teamId
+}
+
+func (c *Client) GetTeamId() string {
+	if len(c.TeamId) == 0 {
+		println(`You are trying to use a route that requires a team_id, 
+        	but you have not called SetTeamId() in client.go`)
+	}
+
+	return c.TeamId
+}
+
+func (c *Client) ClearTeamId() {
+	c.TeamId = ""
+}
+
+func (c *Client) GetTeamRoute() string {
+	return fmt.Sprintf("/teams/%v", c.GetTeamId())
+}
+
+func (c *Client) GetChannelRoute(channelId string) string {
+	return fmt.Sprintf("/teams/%v/channels/%v", c.GetTeamId(), channelId)
+}
+
+func (c *Client) GetUserRequiredRoute(userId string) string {
+	return fmt.Sprintf("/users/%v", userId)
+}
+
+func (c *Client) GetChannelNameRoute(channelName string) string {
+	return fmt.Sprintf("/teams/%v/channels/name/%v", c.GetTeamId(), channelName)
+}
+
+func (c *Client) GetEmojiRoute() string {
+	return "/emoji"
+}
+
+func (c *Client) GetGeneralRoute() string {
+	return "/general"
+}
+
+func (c *Client) GetFileRoute(fileId string) string {
+	return fmt.Sprintf("/files/%v", fileId)
+}
+
+func (c *Client) DoPost(url, data, contentType string) (*http.Response, *AppError) {
+	rq, _ := http.NewRequest("POST", c.Url+url, strings.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode >= 300 {
+		defer closeBody(rp)
+		return nil, AppErrorFromJson(rp.Body)
+	} else {
+		return rp, nil
+	}
+}
+
+func (c *Client) DoApiPost(url string, data string) (*http.Response, *AppError) {
+	rq, _ := http.NewRequest("POST", c.ApiUrl+url, strings.NewReader(data))
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode >= 300 {
+		defer closeBody(rp)
+		return nil, AppErrorFromJson(rp.Body)
+	} else {
+		return rp, nil
+	}
+}
+
+func (c *Client) DoApiGet(url string, data string, etag string) (*http.Response, *AppError) {
+	rq, _ := http.NewRequest("GET", c.ApiUrl+url, strings.NewReader(data))
+	rq.Close = true
+
+	if len(etag) > 0 {
+		rq.Header.Set(HEADER_ETAG_CLIENT, etag)
+	}
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode == 304 {
+		return rp, nil
+	} else if rp.StatusCode >= 300 {
+		defer closeBody(rp)
+		return rp, AppErrorFromJson(rp.Body)
+	} else {
+		return rp, nil
+	}
+}
+
+func getCookie(name string, resp *http.Response) *http.Cookie {
+	for _, cookie := range resp.Cookies() {
+		if cookie.Name == name {
+			return cookie
+		}
+	}
+
+	return nil
+}
+
+// Must is a convenience function used for testing.
+func (c *Client) Must(result *Result, err *AppError) *Result {
+	if err != nil {
+		l4g.Close()
+		time.Sleep(time.Second)
+		panic(err)
+	}
+
+	return result
+}
+
+// MustGeneric is a convenience function used for testing.
+func (c *Client) MustGeneric(result interface{}, err *AppError) interface{} {
+	if err != nil {
+		l4g.Close()
+		time.Sleep(time.Second)
+		panic(err)
+	}
+
+	return result
+}
+
+// CheckStatusOK is a convenience function for checking the return of Web Service
+// call that return the a map of status=OK.
+func (c *Client) CheckStatusOK(r *http.Response) bool {
+	m := MapFromJson(r.Body)
+	defer closeBody(r)
+
+	if m != nil && m[STATUS] == STATUS_OK {
+		return true
+	}
+
+	return false
+}
+
+func (c *Client) fillInExtraProperties(r *http.Response) {
+	c.RequestId = r.Header.Get(HEADER_REQUEST_ID)
+	c.Etag = r.Header.Get(HEADER_ETAG_SERVER)
+	c.ServerVersion = r.Header.Get(HEADER_VERSION_ID)
+}
+
+func (c *Client) clearExtraProperties() {
+	c.RequestId = ""
+	c.Etag = ""
+	c.ServerVersion = ""
+}
+
+// General Routes Section
+
+// GetClientProperties returns properties needed by the client to show/hide
+// certian features.  It returns a map of strings.
+func (c *Client) GetClientProperties() (map[string]string, *AppError) {
+	c.clearExtraProperties()
+	if r, err := c.DoApiGet(c.GetGeneralRoute()+"/client_props", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return MapFromJson(r.Body), nil
+	}
+}
+
+// LogClient is a convenience Web Service call so clients can log messages into
+// the server-side logs.  For example we typically log javascript error messages
+// into the server-side.  It returns true if the logging was successful.
+func (c *Client) LogClient(message string) (bool, *AppError) {
+	c.clearExtraProperties()
+	m := make(map[string]string)
+	m["level"] = "ERROR"
+	m["message"] = message
+
+	if r, err := c.DoApiPost(c.GetGeneralRoute()+"/log_client", MapToJson(m)); err != nil {
+		return false, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+// GetPing returns a map of strings with server time, server version, and node Id.
+// Systems that want to check on health status of the server should check the
+// url /api/v3/ping for a 200 status response.
+func (c *Client) GetPing() (map[string]string, *AppError) {
+	c.clearExtraProperties()
+	if r, err := c.DoApiGet(c.GetGeneralRoute()+"/ping", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return MapFromJson(r.Body), nil
+	}
+}
+
+// Team Routes Section
+
+// CreateTeam creates a team based on the provided Team struct. On success it returns
+// the Team struct with the Id, CreateAt and other server-decided fields populated.
+func (c *Client) CreateTeam(team *Team) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/teams/create", team.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamFromJson(r.Body)}, nil
+	}
+}
+
+// GetAllTeams returns a map of all teams using team ids as the key.
+func (c *Client) GetAllTeams() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/teams/all", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMapFromJson(r.Body)}, nil
+	}
+}
+
+// GetAllTeamListings returns a map of all teams that are available to join
+// using team ids as the key. Must be authenticated.
+func (c *Client) GetAllTeamListings() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/teams/all_team_listings", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMapFromJson(r.Body)}, nil
+	}
+}
+
+// FindTeamByName returns the strings "true" or "false" depending on if a team
+// with the provided name was found.
+func (c *Client) FindTeamByName(name string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["name"] = name
+	if r, err := c.DoApiPost("/teams/find_team_by_name", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		val := false
+		if body, _ := ioutil.ReadAll(r.Body); string(body) == "true" {
+			val = true
+		}
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), val}, nil
+	}
+}
+
+//  Adds a user directly to the team without sending an invite.
+//  The teamId and userId are required.  You must be a valid member of the team and/or
+//  have the correct role to add new users to the team.  Returns a map of user_id=userId
+//  if successful, otherwise returns an AppError.
+func (c *Client) AddUserToTeam(teamId string, userId string) (*Result, *AppError) {
+	if len(teamId) == 0 {
+		teamId = c.GetTeamId()
+	}
+
+	data := make(map[string]string)
+	data["user_id"] = userId
+	if r, err := c.DoApiPost(fmt.Sprintf("/teams/%v", teamId)+"/add_user_to_team", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// AddUserToTeamFromInvite adds a user to a team based off data provided in an invite link.
+// Either hash and dataToHash are required or inviteId is required.
+func (c *Client) AddUserToTeamFromInvite(hash, dataToHash, inviteId string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["hash"] = hash
+	data["data"] = dataToHash
+	data["invite_id"] = inviteId
+	if r, err := c.DoApiPost("/teams/add_user_to_team_from_invite", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamFromJson(r.Body)}, nil
+	}
+}
+
+//  Removes a user directly from the team.
+//  The teamId and userId are required.  You must be a valid member of the team and/or
+//  have the correct role to remove a user from the team.  Returns a map of user_id=userId
+//  if successful, otherwise returns an AppError.
+func (c *Client) RemoveUserFromTeam(teamId string, userId string) (*Result, *AppError) {
+	if len(teamId) == 0 {
+		teamId = c.GetTeamId()
+	}
+
+	data := make(map[string]string)
+	data["user_id"] = userId
+	if r, err := c.DoApiPost(fmt.Sprintf("/teams/%v", teamId)+"/remove_user_from_team", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) InviteMembers(invites *Invites) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/invite_members", invites.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), InvitesFromJson(r.Body)}, nil
+	}
+}
+
+// UpdateTeam updates a team based on the changes in the provided team struct. On success
+// it returns a sanitized version of the updated team. Must be authenticated as a team admin
+// for that team or a system admin.
+func (c *Client) UpdateTeam(team *Team) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/update", team.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamFromJson(r.Body)}, nil
+	}
+}
+
+// User Routes Section
+
+// CreateUser creates a user in the system based on the provided user struct.
+func (c *Client) CreateUser(user *User, hash string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/create", user.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// CreateUserWithInvite creates a user based on the provided user struct. Either the hash and
+// data strings or the inviteId is required from the invite.
+func (c *Client) CreateUserWithInvite(user *User, hash string, data string, inviteId string) (*Result, *AppError) {
+
+	url := "/users/create?d=" + url.QueryEscape(data) + "&h=" + url.QueryEscape(hash) + "&iid=" + url.QueryEscape(inviteId)
+
+	if r, err := c.DoApiPost(url, user.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateUserFromSignup(user *User, data string, hash string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/create?d="+url.QueryEscape(data)+"&h="+hash, user.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// GetUser returns a user based on a provided user id string. Must be authenticated.
+func (c *Client) GetUser(id string, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/"+id+"/get", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// getByUsername returns a user based on a provided username string. Must be authenticated.
+func (c *Client) GetByUsername(username string, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/users/name/%v", username), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// getByEmail returns a user based on a provided username string. Must be authenticated.
+func (c *Client) GetByEmail(email string, etag string) (*User, *ResponseMetadata) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/users/email/%v", email), "", etag); err != nil {
+		return nil, &ResponseMetadata{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body),
+			&ResponseMetadata{
+				StatusCode: r.StatusCode,
+				RequestId:  r.Header.Get(HEADER_REQUEST_ID),
+				Etag:       r.Header.Get(HEADER_ETAG_SERVER),
+			}
+	}
+}
+
+// GetMe returns the current user.
+func (c *Client) GetMe(etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/me", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// GetProfiles returns a map of users using user id as the key. Must be authenticated.
+func (c *Client) GetProfiles(offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/users/%v/%v", offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+// GetProfilesInTeam returns a map of users for a team using user id as the key. Must
+// be authenticated.
+func (c *Client) GetProfilesInTeam(teamId string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/teams/%v/users/%v/%v", teamId, offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+// GetProfilesInChannel returns a map of users for a channel using user id as the key. Must
+// be authenticated.
+func (c *Client) GetProfilesInChannel(channelId string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf(c.GetChannelRoute(channelId)+"/users/%v/%v", offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+// GetProfilesNotInChannel returns a map of users not in a channel but on the team using user id as the key. Must
+// be authenticated.
+func (c *Client) GetProfilesNotInChannel(channelId string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf(c.GetChannelRoute(channelId)+"/users/not_in_channel/%v/%v", offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+// GetProfilesByIds returns a map of users based on the user ids provided. Must
+// be authenticated.
+func (c *Client) GetProfilesByIds(userIds []string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/ids", ArrayToJson(userIds)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+// SearchUsers returns a list of users that have a username matching or similar to the search term. Must
+// be authenticated.
+func (c *Client) SearchUsers(params UserSearch) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/search", params.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserListFromJson(r.Body)}, nil
+	}
+}
+
+// AutocompleteUsersInChannel returns two lists for autocompletion of users in a channel. The first list "in_channel",
+// specifies users in the channel. The second list "out_of_channel" specifies users outside of the
+// channel. Term, the string to search against, is required, channel id is also required. Must be authenticated.
+func (c *Client) AutocompleteUsersInChannel(term string, channelId string) (*Result, *AppError) {
+	url := fmt.Sprintf("%s/users/autocomplete?term=%s", c.GetChannelRoute(channelId), url.QueryEscape(term))
+	if r, err := c.DoApiGet(url, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserAutocompleteInChannelFromJson(r.Body)}, nil
+	}
+}
+
+// AutocompleteUsersInTeam returns a list for autocompletion of users in a team. The list "in_team" specifies
+// the users in the team that match the provided term, matching against username, full name and
+// nickname. Must be authenticated.
+func (c *Client) AutocompleteUsersInTeam(term string) (*Result, *AppError) {
+	url := fmt.Sprintf("%s/users/autocomplete?term=%s", c.GetTeamRoute(), url.QueryEscape(term))
+	if r, err := c.DoApiGet(url, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserAutocompleteInTeamFromJson(r.Body)}, nil
+	}
+}
+
+// AutocompleteUsers returns a list for autocompletion of users on the system that match the provided term,
+// matching against username, full name and nickname. Must be authenticated.
+func (c *Client) AutocompleteUsers(term string) (*Result, *AppError) {
+	url := fmt.Sprintf("/users/autocomplete?term=%s", url.QueryEscape(term))
+	if r, err := c.DoApiGet(url, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserListFromJson(r.Body)}, nil
+	}
+}
+
+// LoginById authenticates a user by user id and password.
+func (c *Client) LoginById(id string, password string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["id"] = id
+	m["password"] = password
+	return c.login(m)
+}
+
+// Login authenticates a user by login id, which can be username, email or some sort
+// of SSO identifier based on configuration, and a password.
+func (c *Client) Login(loginId string, password string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	return c.login(m)
+}
+
+// LoginByLdap authenticates a user by LDAP id and password.
+func (c *Client) LoginByLdap(loginId string, password string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	m["ldap_only"] = "true"
+	return c.login(m)
+}
+
+// LoginWithDevice authenticates a user by login id (username, email or some sort
+// of SSO identifier based on configuration), password and attaches a device id to
+// the session.
+func (c *Client) LoginWithDevice(loginId string, password string, deviceId string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	m["device_id"] = deviceId
+	return c.login(m)
+}
+
+func (c *Client) login(m map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/login", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		c.AuthToken = r.Header.Get(HEADER_TOKEN)
+		c.AuthType = HEADER_BEARER
+		sessionToken := getCookie(SESSION_COOKIE_TOKEN, r)
+
+		if c.AuthToken != sessionToken.Value {
+			NewAppError("/users/login", "model.client.login.app_error", nil, "", 0)
+		}
+
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+// Logout terminates the current user's session.
+func (c *Client) Logout() (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/logout", ""); err != nil {
+		return nil, err
+	} else {
+		c.AuthToken = ""
+		c.AuthType = HEADER_BEARER
+		c.TeamId = ""
+
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// CheckMfa returns a map with key "mfa_required" with the string value "true" or "false",
+// indicating whether MFA is required to log the user in, based on a provided login id
+// (username, email or some sort of SSO identifier based on configuration).
+func (c *Client) CheckMfa(loginId string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+
+	if r, err := c.DoApiPost("/users/mfa", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// GenerateMfaSecret returns a QR code image containing the secret, to be scanned
+// by a multi-factor authentication mobile application. It also returns the secret
+// for manual entry. Must be authenticated.
+func (c *Client) GenerateMfaSecret() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/generate_mfa_secret", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// UpdateMfa activates multi-factor authenticates for the current user if activate
+// is true and a valid token is provided. If activate is false, then token is not
+// required and multi-factor authentication is disabled for the current user.
+func (c *Client) UpdateMfa(activate bool, token string) (*Result, *AppError) {
+	m := make(map[string]interface{})
+	m["activate"] = activate
+	m["token"] = token
+
+	if r, err := c.DoApiPost("/users/update_mfa", StringInterfaceToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) AdminResetMfa(userId string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["user_id"] = userId
+
+	if r, err := c.DoApiPost("/admin/reset_mfa", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) RevokeSession(sessionAltId string) (*Result, *AppError) {
+	m := make(map[string]string)
+	m["id"] = sessionAltId
+
+	if r, err := c.DoApiPost("/users/revoke_session", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetSessions(id string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/"+id+"/sessions", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), SessionsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) EmailToOAuth(m map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/claim/email_to_oauth", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) OAuthToEmail(m map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/claim/oauth_to_email", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) LDAPToEmail(m map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/claim/ldap_to_email", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) EmailToLDAP(m map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/claim/ldap_to_email", MapToJson(m)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) Command(channelId string, command string) (*Result, *AppError) {
+	args := &CommandArgs{ChannelId: channelId, Command: command}
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/commands/execute", args.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandResponseFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) ListCommands() (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/commands/list", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) ListTeamCommands() (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/commands/list_team_commands", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateCommand(cmd *Command) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/commands/create", cmd.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateCommand(cmd *Command) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/commands/update", cmd.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) RegenCommandToken(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/commands/regen_token", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CommandFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) DeleteCommand(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/commands/delete", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetAudits(id string, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/"+id+"/audits", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), AuditsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetLogs() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/logs", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ArrayFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetClusterStatus() ([]*ClusterInfo, *AppError) {
+	if r, err := c.DoApiGet("/admin/cluster_status", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return ClusterInfosFromJson(r.Body), nil
+	}
+}
+
+// GetRecentlyActiveUsers returns a map of users including lastActivityAt using user id as the key
+func (c *Client) GetRecentlyActiveUsers(teamId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/recently_active_users/"+teamId, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserMapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetAllAudits() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/audits", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), AuditsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetConfig() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/config", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ConfigFromJson(r.Body)}, nil
+	}
+}
+
+// ReloadConfig will reload the config.json file from disk.  Properties
+// requiring a server restart will still need a server restart.  You must
+// have the system admin role to call this method.  It will return status=OK
+// if it's successfully reloaded the config file, otherwise check the returned error.
+func (c *Client) ReloadConfig() (bool, *AppError) {
+	c.clearExtraProperties()
+	if r, err := c.DoApiGet("/admin/reload_config", "", ""); err != nil {
+		return false, err
+	} else {
+		c.fillInExtraProperties(r)
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+func (c *Client) InvalidateAllCaches() (bool, *AppError) {
+	c.clearExtraProperties()
+	if r, err := c.DoApiGet("/admin/invalidate_all_caches", "", ""); err != nil {
+		return false, err
+	} else {
+		c.fillInExtraProperties(r)
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+func (c *Client) SaveConfig(config *Config) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/admin/save_config", config.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// RecycleDatabaseConnection will attempt to recycle the database connections.
+// You must have the system admin role to call this method.  It will return status=OK
+// if it's successfully recycled the connections, otherwise check the returned error.
+func (c *Client) RecycleDatabaseConnection() (bool, *AppError) {
+	c.clearExtraProperties()
+	if r, err := c.DoApiGet("/admin/recycle_db_conn", "", ""); err != nil {
+		return false, err
+	} else {
+		c.fillInExtraProperties(r)
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+func (c *Client) TestEmail(config *Config) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/admin/test_email", config.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// TestLdap will run a connection test on the current LDAP settings.
+// It will return the standard OK response if settings work. Otherwise
+// it will return an appropriate error.
+func (c *Client) TestLdap(config *Config) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/admin/ldap_test", config.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetComplianceReports() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/compliance_reports", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), CompliancesFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) SaveComplianceReport(job *Compliance) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/admin/save_compliance_report", job.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ComplianceFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) DownloadComplianceReport(id string) (*Result, *AppError) {
+	var rq *http.Request
+	rq, _ = http.NewRequest("GET", c.ApiUrl+"/admin/download_compliance_report/"+id, nil)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, "BEARER "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError("/admin/download_compliance_report", "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode >= 300 {
+		defer rp.Body.Close()
+		return nil, AppErrorFromJson(rp.Body)
+	} else {
+		defer closeBody(rp)
+		return &Result{rp.Header.Get(HEADER_REQUEST_ID),
+			rp.Header.Get(HEADER_ETAG_SERVER), rp.Body}, nil
+	}
+}
+
+func (c *Client) GetTeamAnalytics(teamId, name string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/analytics/"+teamId+"/"+name, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), AnalyticsRowsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetSystemAnalytics(name string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/admin/analytics/"+name, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), AnalyticsRowsFromJson(r.Body)}, nil
+	}
+}
+
+// Initiate immediate synchronization of LDAP users.
+// The synchronization will be performed asynchronously and this function will
+// always return OK unless you don't have permissions.
+// You must be the system administrator to use this function.
+func (c *Client) LdapSyncNow() (*Result, *AppError) {
+	if r, err := c.DoApiPost("/admin/ldap_sync_now", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateChannel(channel *Channel) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/create", channel.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateDirectChannel(userId string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["user_id"] = userId
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/create_direct", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateGroupChannel(userIds []string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/create_group", ArrayToJson(userIds)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateChannel(channel *Channel) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/update", channel.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateChannelHeader(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/update_header", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateChannelPurpose(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/update_purpose", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateNotifyProps(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/update_notify_props", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetMyChannelMembers() (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/channels/members", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelMembersFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetChannel(id, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(id)+"/", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelDataFromJson(r.Body)}, nil
+	}
+}
+
+// GetMoreChannelsPage will return a page of open channels the user is not in based on
+// the provided offset and limit. Must be authenticated.
+func (c *Client) GetMoreChannelsPage(offset int, limit int) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf(c.GetTeamRoute()+"/channels/more/%v/%v", offset, limit), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelListFromJson(r.Body)}, nil
+	}
+}
+
+// SearchMoreChannels will return a list of open channels the user is not in, that matches
+// the search criteria provided. Must be authenticated.
+func (c *Client) SearchMoreChannels(channelSearch ChannelSearch) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/more/search", channelSearch.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelListFromJson(r.Body)}, nil
+	}
+}
+
+// AutocompleteChannels will return a list of open channels that match the provided
+// string. Must be authenticated.
+func (c *Client) AutocompleteChannels(term string) (*Result, *AppError) {
+	url := fmt.Sprintf("%s/channels/autocomplete?term=%s", c.GetTeamRoute(), url.QueryEscape(term))
+	if r, err := c.DoApiGet(url, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetChannelCounts(etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/channels/counts", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelCountsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetChannels(etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/channels/", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetChannelByName(channelName string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelNameRoute(channelName), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) JoinChannel(id string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(id)+"/join", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) JoinChannelByName(name string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelNameRoute(name)+"/join", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) LeaveChannel(id string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(id)+"/leave", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) DeleteChannel(id string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(id)+"/delete", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) AddChannelMember(id, user_id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["user_id"] = user_id
+	if r, err := c.DoApiPost(c.GetChannelRoute(id)+"/add", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) RemoveChannelMember(id, user_id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["user_id"] = user_id
+	if r, err := c.DoApiPost(c.GetChannelRoute(id)+"/remove", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+// ViewChannel performs all the actions related to viewing a channel. This includes marking
+// the channel and the previous one as read, and marking the channel as being actively viewed.
+// ChannelId is required but may be blank to indicate no channel is being viewed.
+// PrevChannelId is optional, populate to indicate a channel switch occurred.
+func (c *Client) ViewChannel(params ChannelView) (bool, *ResponseMetadata) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/channels/view", params.ToJson()); err != nil {
+		return false, &ResponseMetadata{StatusCode: r.StatusCode, Error: err}
+	} else {
+		return c.CheckStatusOK(r),
+			&ResponseMetadata{
+				StatusCode: r.StatusCode,
+				RequestId:  r.Header.Get(HEADER_REQUEST_ID),
+				Etag:       r.Header.Get(HEADER_ETAG_SERVER),
+			}
+	}
+}
+
+func (c *Client) GetChannelStats(id string, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(id)+"/stats", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelStatsFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetChannelMember(channelId string, userId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/members/"+userId, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelMemberFromJson(r.Body)}, nil
+	}
+}
+
+// GetChannelMembersByIds will return channel member objects as an array based on the
+// channel id and a list of user ids provided. Must be authenticated.
+func (c *Client) GetChannelMembersByIds(channelId string, userIds []string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/members/ids", ArrayToJson(userIds)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelMembersFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreatePost(post *Post) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(post.ChannelId)+"/posts/create", post.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdatePost(post *Post) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(post.ChannelId)+"/posts/update", post.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPosts(channelId string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/page/%v/%v", offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPostsSince(channelId string, time int64) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/since/%v", time), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPostsBefore(channelId string, postid string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/before/%v/%v", postid, offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPostsAfter(channelId string, postid string, offset int, limit int, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf(c.GetChannelRoute(channelId)+"/posts/%v/after/%v/%v", postid, offset, limit), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPost(channelId string, postId string, etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/get", postId), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+// GetPostById returns a post and any posts in the same thread by post id
+func (c *Client) GetPostById(postId string, etag string) (*PostList, *ResponseMetadata) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+fmt.Sprintf("/posts/%v", postId), "", etag); err != nil {
+		return nil, &ResponseMetadata{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body),
+			&ResponseMetadata{
+				StatusCode: r.StatusCode,
+				RequestId:  r.Header.Get(HEADER_REQUEST_ID),
+				Etag:       r.Header.Get(HEADER_ETAG_SERVER),
+			}
+	}
+}
+
+// GetPermalink returns a post list, based on the provided channel and post ID.
+func (c *Client) GetPermalink(channelId string, postId string, etag string) (*PostList, *ResponseMetadata) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+fmt.Sprintf("/pltmp/%v", postId), "", etag); err != nil {
+		return nil, &ResponseMetadata{StatusCode: r.StatusCode, Error: err}
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body),
+			&ResponseMetadata{
+				StatusCode: r.StatusCode,
+				RequestId:  r.Header.Get(HEADER_REQUEST_ID),
+				Etag:       r.Header.Get(HEADER_ETAG_SERVER),
+			}
+	}
+}
+
+func (c *Client) DeletePost(channelId string, postId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/delete", postId), ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) SearchPosts(terms string, isOrSearch bool) (*Result, *AppError) {
+	data := map[string]interface{}{}
+	data["terms"] = terms
+	data["is_or_search"] = isOrSearch
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/posts/search", StringInterfaceToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+// GetFlaggedPosts will return a post list of posts that have been flagged by the user.
+// The page is set by the integer parameters offset and limit.
+func (c *Client) GetFlaggedPosts(offset int, limit int) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+fmt.Sprintf("/posts/flagged/%v/%v", offset, limit), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPinnedPosts(channelId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/pinned", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UploadProfileFile(data []byte, contentType string) (*Result, *AppError) {
+	return c.uploadFile(c.ApiUrl+"/users/newimage", data, contentType)
+}
+
+func (c *Client) UploadPostAttachment(data []byte, channelId string, filename string) (*FileUploadResponse, *AppError) {
+	c.clearExtraProperties()
+
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("files", filename); err != nil {
+		return nil, NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), 0)
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return nil, NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), 0)
+	}
+
+	if part, err := writer.CreateFormField("channel_id"); err != nil {
+		return nil, NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.channel_id.app_error", nil, err.Error(), 0)
+	} else if _, err = io.Copy(part, strings.NewReader(channelId)); err != nil {
+		return nil, NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.channel_id.app_error", nil, err.Error(), 0)
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.writer.app_error", nil, err.Error(), 0)
+	}
+
+	if result, err := c.uploadFile(c.ApiUrl+c.GetTeamRoute()+"/files/upload", body.Bytes(), writer.FormDataContentType()); err != nil {
+		return nil, err
+	} else {
+		return result.Data.(*FileUploadResponse), nil
+	}
+}
+
+func (c *Client) uploadFile(url string, data []byte, contentType string) (*Result, *AppError) {
+	rq, _ := http.NewRequest("POST", url, bytes.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, "BEARER "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode >= 300 {
+		return nil, AppErrorFromJson(rp.Body)
+	} else {
+		defer closeBody(rp)
+		return &Result{rp.Header.Get(HEADER_REQUEST_ID),
+			rp.Header.Get(HEADER_ETAG_SERVER), FileUploadResponseFromJson(rp.Body)}, nil
+	}
+}
+
+func (c *Client) GetFile(fileId string) (io.ReadCloser, *AppError) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/get", "", ""); err != nil {
+		return nil, err
+	} else {
+		c.fillInExtraProperties(r)
+		return r.Body, nil
+	}
+}
+
+func (c *Client) GetFileThumbnail(fileId string) (io.ReadCloser, *AppError) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/get_thumbnail", "", ""); err != nil {
+		return nil, err
+	} else {
+		c.fillInExtraProperties(r)
+		return r.Body, nil
+	}
+}
+
+func (c *Client) GetFilePreview(fileId string) (io.ReadCloser, *AppError) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/get_preview", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return r.Body, nil
+	}
+}
+
+func (c *Client) GetFileInfo(fileId string) (*FileInfo, *AppError) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/get_info", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return FileInfoFromJson(r.Body), nil
+	}
+}
+
+func (c *Client) GetPublicLink(fileId string) (string, *AppError) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/get_public_link", "", ""); err != nil {
+		return "", err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return StringFromJson(r.Body), nil
+	}
+}
+
+func (c *Client) UpdateUser(user *User) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/update", user.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateUserRoles(userId string, roles string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["new_roles"] = roles
+
+	if r, err := c.DoApiPost(c.GetUserRequiredRoute(userId)+"/update_roles", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateTeamRoles(userId string, roles string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["new_roles"] = roles
+	data["user_id"] = userId
+
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/update_member_roles", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) AttachDeviceId(deviceId string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["device_id"] = deviceId
+	if r, err := c.DoApiPost("/users/attach_device", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateActive(userId string, active bool) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["user_id"] = userId
+	data["active"] = strconv.FormatBool(active)
+	if r, err := c.DoApiPost("/users/update_active", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateUserNotify(data map[string]string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/update_notify", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), UserFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateUserPassword(userId, currentPassword, newPassword string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["current_password"] = currentPassword
+	data["new_password"] = newPassword
+	data["user_id"] = userId
+
+	if r, err := c.DoApiPost("/users/newpassword", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) SendPasswordReset(email string) (*Result, *AppError) {
+	data := map[string]string{}
+	data["email"] = email
+	if r, err := c.DoApiPost("/users/send_password_reset", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) ResetPassword(code, newPassword string) (*Result, *AppError) {
+	data := map[string]string{}
+	data["code"] = code
+	data["new_password"] = newPassword
+	if r, err := c.DoApiPost("/users/reset_password", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) AdminResetPassword(userId, newPassword string) (*Result, *AppError) {
+	data := map[string]string{}
+	data["user_id"] = userId
+	data["new_password"] = newPassword
+	if r, err := c.DoApiPost("/admin/reset_password", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// GetStatuses returns a map of string statuses using user id as the key
+func (c *Client) GetStatuses() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/status", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// GetStatusesByIds returns a map of string statuses using user id as the key,
+// based on the provided user ids
+func (c *Client) GetStatusesByIds(userIds []string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/users/status/ids", ArrayToJson(userIds)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetMyTeam(etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/me", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamFromJson(r.Body)}, nil
+	}
+}
+
+// GetTeamMembers will return a page of team member objects as an array paged based on the
+// team id, offset and limit provided. Must be authenticated.
+func (c *Client) GetTeamMembers(teamId string, offset int, limit int) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/teams/%v/members/%v/%v", teamId, offset, limit), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMembersFromJson(r.Body)}, nil
+	}
+}
+
+// GetMyTeamMembers will return an array with team member objects that the current user
+// is a member of. Must be authenticated.
+func (c *Client) GetMyTeamMembers() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/teams/members", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMembersFromJson(r.Body)}, nil
+	}
+}
+
+// GetMyTeamsUnread will return an array with TeamUnread objects that contain the amount of
+// unread messages and mentions the current user has for the teams it belongs to.
+// An optional team ID can be set to exclude that team from the results. Must be authenticated.
+func (c *Client) GetMyTeamsUnread(teamId string) (*Result, *AppError) {
+	endpoint := "/teams/unread"
+
+	if teamId != "" {
+		endpoint += fmt.Sprintf("?id=%s", url.QueryEscape(teamId))
+	}
+	if r, err := c.DoApiGet(endpoint, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamsUnreadFromJson(r.Body)}, nil
+	}
+}
+
+// GetTeamMember will return a team member object based on the team id and user id provided.
+// Must be authenticated.
+func (c *Client) GetTeamMember(teamId string, userId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/teams/%v/members/%v", teamId, userId), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMemberFromJson(r.Body)}, nil
+	}
+}
+
+// GetTeamStats will return a team stats object containing the number of users on the team
+// based on the team id provided. Must be authenticated.
+func (c *Client) GetTeamStats(teamId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/teams/%v/stats", teamId), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamStatsFromJson(r.Body)}, nil
+	}
+}
+
+// GetTeamByName will return a team object based on the team name provided. Must be authenticated.
+func (c *Client) GetTeamByName(teamName string) (*Result, *AppError) {
+	if r, err := c.DoApiGet(fmt.Sprintf("/teams/name/%v", teamName), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamFromJson(r.Body)}, nil
+	}
+}
+
+// GetTeamMembersByIds will return team member objects as an array based on the
+// team id and a list of user ids provided. Must be authenticated.
+func (c *Client) GetTeamMembersByIds(teamId string, userIds []string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(fmt.Sprintf("/teams/%v/members/ids", teamId), ArrayToJson(userIds)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), TeamMembersFromJson(r.Body)}, nil
+	}
+}
+
+// RegisterApp creates a new OAuth2 app to be used with the OAuth2 Provider. On success
+// it returns the created app. Must be authenticated as a user.
+func (c *Client) RegisterApp(app *OAuthApp) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/oauth/register", app.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OAuthAppFromJson(r.Body)}, nil
+	}
+}
+
+// AllowOAuth allows a new session by an OAuth2 App. On success
+// it returns the url to be redirected back to the app which initiated the oauth2 flow.
+// Must be authenticated as a user.
+func (c *Client) AllowOAuth(rspType, clientId, redirect, scope, state string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/oauth/allow?response_type="+rspType+"&client_id="+clientId+"&redirect_uri="+url.QueryEscape(redirect)+"&scope="+scope+"&state="+url.QueryEscape(state), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// GetOAuthAppsByUser returns the OAuth2 Apps registered by the user. On success
+// it returns a list of OAuth2 Apps from the same user or all the registered apps if the user
+// is a System Administrator. Must be authenticated as a user.
+func (c *Client) GetOAuthAppsByUser() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/oauth/list", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OAuthAppListFromJson(r.Body)}, nil
+	}
+}
+
+// GetOAuthAppInfo lookup an OAuth2 App using the client_id. On success
+// it returns a Sanitized OAuth2 App. Must be authenticated as a user.
+func (c *Client) GetOAuthAppInfo(clientId string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/oauth/app/"+clientId, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OAuthAppFromJson(r.Body)}, nil
+	}
+}
+
+// DeleteOAuthApp deletes an OAuth2 app, the app must be deleted by the same user who created it or
+// a System Administrator. On success returs Status OK. Must be authenticated as a user.
+func (c *Client) DeleteOAuthApp(id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["id"] = id
+	if r, err := c.DoApiPost("/oauth/delete", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+// GetOAuthAuthorizedApps returns the OAuth2 Apps authorized by the user. On success
+// it returns a list of sanitized OAuth2 Authorized Apps by the user.
+func (c *Client) GetOAuthAuthorizedApps() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/oauth/authorized", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OAuthAppListFromJson(r.Body)}, nil
+	}
+}
+
+// OAuthDeauthorizeApp deauthorize a user an OAuth 2.0 app. On success
+// it returns status OK or an AppError on fail.
+func (c *Client) OAuthDeauthorizeApp(clientId string) *AppError {
+	if r, err := c.DoApiPost("/oauth/"+clientId+"/deauthorize", ""); err != nil {
+		return err
+	} else {
+		defer closeBody(r)
+		return nil
+	}
+}
+
+// RegenerateOAuthAppSecret generates a new OAuth App Client Secret. On success
+// it returns an OAuth2 App. Must be authenticated as a user and the same user who
+// registered the app or a System Admin.
+func (c *Client) RegenerateOAuthAppSecret(clientId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/oauth/"+clientId+"/regen_secret", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OAuthAppFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetAccessToken(data url.Values) (*Result, *AppError) {
+	if r, err := c.DoPost("/oauth/access_token", data.Encode(), "application/x-www-form-urlencoded"); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), AccessResponseFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) CreateIncomingWebhook(hook *IncomingWebhook) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/incoming/create", hook.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), IncomingWebhookFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateIncomingWebhook(hook *IncomingWebhook) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/incoming/update", hook.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), IncomingWebhookFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) PostToWebhook(id, payload string) (*Result, *AppError) {
+	if r, err := c.DoPost("/hooks/"+id, payload, "application/x-www-form-urlencoded"); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), nil}, nil
+	}
+}
+
+func (c *Client) DeleteIncomingWebhook(id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["id"] = id
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/incoming/delete", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) ListIncomingWebhooks() (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/hooks/incoming/list", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), IncomingWebhookListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetAllPreferences() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/preferences/", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		preferences, _ := PreferencesFromJson(r.Body)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID), r.Header.Get(HEADER_ETAG_SERVER), preferences}, nil
+	}
+}
+
+func (c *Client) SetPreferences(preferences *Preferences) (*Result, *AppError) {
+	if r, err := c.DoApiPost("/preferences/save", preferences.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), preferences}, nil
+	}
+}
+
+func (c *Client) GetPreference(category string, name string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/preferences/"+category+"/"+name, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID), r.Header.Get(HEADER_ETAG_SERVER), PreferenceFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetPreferenceCategory(category string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/preferences/"+category, "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		preferences, _ := PreferencesFromJson(r.Body)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID), r.Header.Get(HEADER_ETAG_SERVER), preferences}, nil
+	}
+}
+
+// DeletePreferences deletes a list of preferences owned by the current user. If successful,
+// it will return status=ok. Otherwise, an error will be returned.
+func (c *Client) DeletePreferences(preferences *Preferences) (bool, *AppError) {
+	if r, err := c.DoApiPost("/preferences/delete", preferences.ToJson()); err != nil {
+		return false, err
+	} else {
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+func (c *Client) CreateOutgoingWebhook(hook *OutgoingWebhook) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/outgoing/create", hook.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OutgoingWebhookFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UpdateOutgoingWebhook(hook *OutgoingWebhook) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/outgoing/update", hook.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OutgoingWebhookFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) DeleteOutgoingWebhook(id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["id"] = id
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/outgoing/delete", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) ListOutgoingWebhooks() (*Result, *AppError) {
+	if r, err := c.DoApiGet(c.GetTeamRoute()+"/hooks/outgoing/list", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OutgoingWebhookListFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) RegenOutgoingWebhookToken(id string) (*Result, *AppError) {
+	data := make(map[string]string)
+	data["id"] = id
+	if r, err := c.DoApiPost(c.GetTeamRoute()+"/hooks/outgoing/regen_token", MapToJson(data)); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), OutgoingWebhookFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) MockSession(sessionToken string) {
+	c.AuthToken = sessionToken
+	c.AuthType = HEADER_BEARER
+}
+
+func (c *Client) GetClientLicenceConfig(etag string) (*Result, *AppError) {
+	if r, err := c.DoApiGet("/license/client_config", "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), MapFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) GetInitialLoad() (*Result, *AppError) {
+	if r, err := c.DoApiGet("/users/initial_load", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), InitialLoadFromJson(r.Body)}, nil
+	}
+}
+
+// ListEmoji returns a list of all user-created emoji for the server.
+func (c *Client) ListEmoji() ([]*Emoji, *AppError) {
+	if r, err := c.DoApiGet(c.GetEmojiRoute()+"/list", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return EmojiListFromJson(r.Body), nil
+	}
+}
+
+// CreateEmoji will save an emoji to the server if the current user has permission
+// to do so. If successful, the provided emoji will be returned with its Id field
+// filled in. Otherwise, an error will be returned.
+func (c *Client) CreateEmoji(emoji *Emoji, image []byte, filename string) (*Emoji, *AppError) {
+	c.clearExtraProperties()
+
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("image", filename); err != nil {
+		return nil, NewAppError("CreateEmoji", "model.client.create_emoji.image.app_error", nil, err.Error(), 0)
+	} else if _, err = io.Copy(part, bytes.NewBuffer(image)); err != nil {
+		return nil, NewAppError("CreateEmoji", "model.client.create_emoji.image.app_error", nil, err.Error(), 0)
+	}
+
+	if err := writer.WriteField("emoji", emoji.ToJson()); err != nil {
+		return nil, NewAppError("CreateEmoji", "model.client.create_emoji.emoji.app_error", nil, err.Error(), 0)
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, NewAppError("CreateEmoji", "model.client.create_emoji.writer.app_error", nil, err.Error(), 0)
+	}
+
+	rq, _ := http.NewRequest("POST", c.ApiUrl+c.GetEmojiRoute()+"/create", body)
+	rq.Header.Set("Content-Type", writer.FormDataContentType())
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, "BEARER "+c.AuthToken)
+	}
+
+	if r, err := c.HttpClient.Do(rq); err != nil {
+		return nil, NewAppError("CreateEmoji", "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if r.StatusCode >= 300 {
+		return nil, AppErrorFromJson(r.Body)
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return EmojiFromJson(r.Body), nil
+	}
+}
+
+// DeleteEmoji will delete an emoji from the server if the current user has permission
+// to do so. If successful, it will return status=ok. Otherwise, an error will be returned.
+func (c *Client) DeleteEmoji(id string) (bool, *AppError) {
+	data := map[string]string{"id": id}
+
+	if r, err := c.DoApiPost(c.GetEmojiRoute()+"/delete", MapToJson(data)); err != nil {
+		return false, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return c.CheckStatusOK(r), nil
+	}
+}
+
+// GetCustomEmojiImageUrl returns the API route that can be used to get the image used by
+// the given emoji.
+func (c *Client) GetCustomEmojiImageUrl(id string) string {
+	return c.GetEmojiRoute() + "/" + id
+}
+
+// Uploads a x509 base64 Certificate or Private Key file to be used with SAML.
+// data byte array is required and needs to be a Multi-Part with 'certificate' as the field name
+// contentType is also required. Returns nil if succesful, otherwise returns an AppError
+func (c *Client) UploadCertificateFile(data []byte, contentType string) *AppError {
+	url := c.ApiUrl + "/admin/add_certificate"
+	rq, _ := http.NewRequest("POST", url, bytes.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, "BEARER "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil {
+		return NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode >= 300 {
+		return AppErrorFromJson(rp.Body)
+	} else {
+		defer closeBody(rp)
+		c.fillInExtraProperties(rp)
+		return nil
+	}
+}
+
+// Removes a x509 base64 Certificate or Private Key file used with SAML.
+// filename is required. Returns nil if successful, otherwise returns an AppError
+func (c *Client) RemoveCertificateFile(filename string) *AppError {
+	if r, err := c.DoApiPost("/admin/remove_certificate", MapToJson(map[string]string{"filename": filename})); err != nil {
+		return err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return nil
+	}
+}
+
+// Checks if the x509 base64 Certificates and Private Key files used with SAML exists on the file system.
+// Returns a map[string]interface{} if successful, otherwise returns an AppError. Must be System Admin authenticated.
+func (c *Client) SamlCertificateStatus(filename string) (map[string]interface{}, *AppError) {
+	if r, err := c.DoApiGet("/admin/remove_certificate", "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return StringInterfaceFromJson(r.Body), nil
+	}
+}
+
+// GetWebrtcToken if Successful returns a map with a valid token, stun server and turn server with credentials to use with
+// the Mattermost WebRTC service, otherwise returns an AppError. Must be authenticated user.
+func (c *Client) GetWebrtcToken() (map[string]string, *AppError) {
+	if r, err := c.DoApiPost("/webrtc/token", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), nil
+	}
+}
+
+// GetFileInfosForPost returns a list of FileInfo objects for a given post id, if successful.
+// Otherwise, it returns an error.
+func (c *Client) GetFileInfosForPost(channelId string, postId string, etag string) ([]*FileInfo, *AppError) {
+	c.clearExtraProperties()
+
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/get_file_infos", postId), "", etag); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return FileInfosFromJson(r.Body), nil
+	}
+}
+
+// Saves an emoji reaction for a post in the given channel. Returns the saved reaction if successful, otherwise returns an AppError.
+func (c *Client) SaveReaction(channelId string, reaction *Reaction) (*Reaction, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/reactions/save", reaction.PostId), reaction.ToJson()); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return ReactionFromJson(r.Body), nil
+	}
+}
+
+// Removes an emoji reaction for a post in the given channel. Returns nil if successful, otherwise returns an AppError.
+func (c *Client) DeleteReaction(channelId string, reaction *Reaction) *AppError {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/reactions/delete", reaction.PostId), reaction.ToJson()); err != nil {
+		return err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return nil
+	}
+}
+
+// Lists all emoji reactions made for the given post in the given channel. Returns a list of Reactions if successful, otherwise returns an AppError.
+func (c *Client) ListReactions(channelId string, postId string) ([]*Reaction, *AppError) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+fmt.Sprintf("/posts/%v/reactions", postId), "", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		c.fillInExtraProperties(r)
+		return ReactionsFromJson(r.Body), nil
+	}
+}
+
+// Updates the user's roles in the channel by replacing them with the roles provided.
+func (c *Client) UpdateChannelRoles(channelId string, userId string, roles string) (map[string]string, *ResponseMetadata) {
+	data := make(map[string]string)
+	data["new_roles"] = roles
+	data["user_id"] = userId
+
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/update_member_roles", MapToJson(data)); err != nil {
+		metadata := ResponseMetadata{Error: err}
+		if r != nil {
+			metadata.StatusCode = r.StatusCode
+		}
+		return nil, &metadata
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body),
+			&ResponseMetadata{
+				StatusCode: r.StatusCode,
+				RequestId:  r.Header.Get(HEADER_REQUEST_ID),
+				Etag:       r.Header.Get(HEADER_ETAG_SERVER),
+			}
+	}
+}
+
+func (c *Client) PinPost(channelId string, postId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/posts/"+postId+"/pin", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}
+
+func (c *Client) UnpinPost(channelId string, postId string) (*Result, *AppError) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/posts/"+postId+"/unpin", ""); err != nil {
+		return nil, err
+	} else {
+		defer closeBody(r)
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), PostFromJson(r.Body)}, nil
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/client4.go b/vendor/github.com/mattermost/mattermost-server/model/client4.go
new file mode 100644
index 00000000..962b816b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/client4.go
@@ -0,0 +1,3299 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+type Response struct {
+	StatusCode    int
+	Error         *AppError
+	RequestId     string
+	Etag          string
+	ServerVersion string
+	Header        http.Header
+}
+
+type Client4 struct {
+	Url        string       // The location of the server, for example  "http://localhost:8065"
+	ApiUrl     string       // The api location of the server, for example "http://localhost:8065/api/v4"
+	HttpClient *http.Client // The http client
+	AuthToken  string
+	AuthType   string
+}
+
+func NewAPIv4Client(url string) *Client4 {
+	return &Client4{url, url + API_URL_SUFFIX, &http.Client{}, "", ""}
+}
+
+func BuildErrorResponse(r *http.Response, err *AppError) *Response {
+	var statusCode int
+	var header http.Header
+	if r != nil {
+		statusCode = r.StatusCode
+		header = r.Header
+	} else {
+		statusCode = 0
+		header = make(http.Header)
+	}
+
+	return &Response{
+		StatusCode: statusCode,
+		Error:      err,
+		Header:     header,
+	}
+}
+
+func BuildResponse(r *http.Response) *Response {
+	return &Response{
+		StatusCode:    r.StatusCode,
+		RequestId:     r.Header.Get(HEADER_REQUEST_ID),
+		Etag:          r.Header.Get(HEADER_ETAG_SERVER),
+		ServerVersion: r.Header.Get(HEADER_VERSION_ID),
+		Header:        r.Header,
+	}
+}
+
+func (c *Client4) SetOAuthToken(token string) {
+	c.AuthToken = token
+	c.AuthType = HEADER_TOKEN
+}
+
+func (c *Client4) ClearOAuthToken() {
+	c.AuthToken = ""
+	c.AuthType = HEADER_BEARER
+}
+
+func (c *Client4) GetUsersRoute() string {
+	return fmt.Sprintf("/users")
+}
+
+func (c *Client4) GetUserRoute(userId string) string {
+	return fmt.Sprintf(c.GetUsersRoute()+"/%v", userId)
+}
+
+func (c *Client4) GetUserAccessTokensRoute() string {
+	return fmt.Sprintf(c.GetUsersRoute() + "/tokens")
+}
+
+func (c *Client4) GetUserAccessTokenRoute(tokenId string) string {
+	return fmt.Sprintf(c.GetUsersRoute()+"/tokens/%v", tokenId)
+}
+
+func (c *Client4) GetUserByUsernameRoute(userName string) string {
+	return fmt.Sprintf(c.GetUsersRoute()+"/username/%v", userName)
+}
+
+func (c *Client4) GetUserByEmailRoute(email string) string {
+	return fmt.Sprintf(c.GetUsersRoute()+"/email/%v", email)
+}
+
+func (c *Client4) GetTeamsRoute() string {
+	return fmt.Sprintf("/teams")
+}
+
+func (c *Client4) GetTeamRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamsRoute()+"/%v", teamId)
+}
+
+func (c *Client4) GetTeamAutoCompleteCommandsRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamsRoute()+"/%v/commands/autocomplete", teamId)
+}
+
+func (c *Client4) GetTeamByNameRoute(teamName string) string {
+	return fmt.Sprintf(c.GetTeamsRoute()+"/name/%v", teamName)
+}
+
+func (c *Client4) GetTeamMemberRoute(teamId, userId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId)+"/members/%v", userId)
+}
+
+func (c *Client4) GetTeamMembersRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId) + "/members")
+}
+
+func (c *Client4) GetTeamStatsRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId) + "/stats")
+}
+
+func (c *Client4) GetTeamImportRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId) + "/import")
+}
+
+func (c *Client4) GetChannelsRoute() string {
+	return fmt.Sprintf("/channels")
+}
+
+func (c *Client4) GetChannelsForTeamRoute(teamId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId) + "/channels")
+}
+
+func (c *Client4) GetChannelRoute(channelId string) string {
+	return fmt.Sprintf(c.GetChannelsRoute()+"/%v", channelId)
+}
+
+func (c *Client4) GetChannelByNameRoute(channelName, teamId string) string {
+	return fmt.Sprintf(c.GetTeamRoute(teamId)+"/channels/name/%v", channelName)
+}
+
+func (c *Client4) GetChannelByNameForTeamNameRoute(channelName, teamName string) string {
+	return fmt.Sprintf(c.GetTeamByNameRoute(teamName)+"/channels/name/%v", channelName)
+}
+
+func (c *Client4) GetChannelMembersRoute(channelId string) string {
+	return fmt.Sprintf(c.GetChannelRoute(channelId) + "/members")
+}
+
+func (c *Client4) GetChannelMemberRoute(channelId, userId string) string {
+	return fmt.Sprintf(c.GetChannelMembersRoute(channelId)+"/%v", userId)
+}
+
+func (c *Client4) GetPostsRoute() string {
+	return fmt.Sprintf("/posts")
+}
+
+func (c *Client4) GetConfigRoute() string {
+	return fmt.Sprintf("/config")
+}
+
+func (c *Client4) GetLicenseRoute() string {
+	return fmt.Sprintf("/license")
+}
+
+func (c *Client4) GetPostRoute(postId string) string {
+	return fmt.Sprintf(c.GetPostsRoute()+"/%v", postId)
+}
+
+func (c *Client4) GetFilesRoute() string {
+	return fmt.Sprintf("/files")
+}
+
+func (c *Client4) GetFileRoute(fileId string) string {
+	return fmt.Sprintf(c.GetFilesRoute()+"/%v", fileId)
+}
+
+func (c *Client4) GetPluginsRoute() string {
+	return fmt.Sprintf("/plugins")
+}
+
+func (c *Client4) GetPluginRoute(pluginId string) string {
+	return fmt.Sprintf(c.GetPluginsRoute()+"/%v", pluginId)
+}
+
+func (c *Client4) GetSystemRoute() string {
+	return fmt.Sprintf("/system")
+}
+
+func (c *Client4) GetTestEmailRoute() string {
+	return fmt.Sprintf("/email/test")
+}
+
+func (c *Client4) GetDatabaseRoute() string {
+	return fmt.Sprintf("/database")
+}
+
+func (c *Client4) GetCacheRoute() string {
+	return fmt.Sprintf("/caches")
+}
+
+func (c *Client4) GetClusterRoute() string {
+	return fmt.Sprintf("/cluster")
+}
+
+func (c *Client4) GetIncomingWebhooksRoute() string {
+	return fmt.Sprintf("/hooks/incoming")
+}
+
+func (c *Client4) GetIncomingWebhookRoute(hookID string) string {
+	return fmt.Sprintf(c.GetIncomingWebhooksRoute()+"/%v", hookID)
+}
+
+func (c *Client4) GetComplianceReportsRoute() string {
+	return fmt.Sprintf("/compliance/reports")
+}
+
+func (c *Client4) GetComplianceReportRoute(reportId string) string {
+	return fmt.Sprintf("/compliance/reports/%v", reportId)
+}
+
+func (c *Client4) GetOutgoingWebhooksRoute() string {
+	return fmt.Sprintf("/hooks/outgoing")
+}
+
+func (c *Client4) GetOutgoingWebhookRoute(hookID string) string {
+	return fmt.Sprintf(c.GetOutgoingWebhooksRoute()+"/%v", hookID)
+}
+
+func (c *Client4) GetPreferencesRoute(userId string) string {
+	return fmt.Sprintf(c.GetUserRoute(userId) + "/preferences")
+}
+
+func (c *Client4) GetUserStatusRoute(userId string) string {
+	return fmt.Sprintf(c.GetUserRoute(userId) + "/status")
+}
+
+func (c *Client4) GetUserStatusesRoute() string {
+	return fmt.Sprintf(c.GetUsersRoute() + "/status")
+}
+
+func (c *Client4) GetSamlRoute() string {
+	return fmt.Sprintf("/saml")
+}
+
+func (c *Client4) GetLdapRoute() string {
+	return fmt.Sprintf("/ldap")
+}
+
+func (c *Client4) GetBrandRoute() string {
+	return fmt.Sprintf("/brand")
+}
+
+func (c *Client4) GetDataRetentionRoute() string {
+	return fmt.Sprintf("/data_retention")
+}
+
+func (c *Client4) GetElasticsearchRoute() string {
+	return fmt.Sprintf("/elasticsearch")
+}
+
+func (c *Client4) GetCommandsRoute() string {
+	return fmt.Sprintf("/commands")
+}
+
+func (c *Client4) GetCommandRoute(commandId string) string {
+	return fmt.Sprintf(c.GetCommandsRoute()+"/%v", commandId)
+}
+
+func (c *Client4) GetEmojisRoute() string {
+	return fmt.Sprintf("/emoji")
+}
+
+func (c *Client4) GetEmojiRoute(emojiId string) string {
+	return fmt.Sprintf(c.GetEmojisRoute()+"/%v", emojiId)
+}
+
+func (c *Client4) GetEmojiByNameRoute(name string) string {
+	return fmt.Sprintf(c.GetEmojisRoute()+"/name/%v", name)
+}
+
+func (c *Client4) GetReactionsRoute() string {
+	return fmt.Sprintf("/reactions")
+}
+
+func (c *Client4) GetOAuthAppsRoute() string {
+	return fmt.Sprintf("/oauth/apps")
+}
+
+func (c *Client4) GetOAuthAppRoute(appId string) string {
+	return fmt.Sprintf("/oauth/apps/%v", appId)
+}
+
+func (c *Client4) GetOpenGraphRoute() string {
+	return fmt.Sprintf("/opengraph")
+}
+
+func (c *Client4) GetJobsRoute() string {
+	return fmt.Sprintf("/jobs")
+}
+
+func (c *Client4) GetAnalyticsRoute() string {
+	return fmt.Sprintf("/analytics")
+}
+
+func (c *Client4) DoApiGet(url string, etag string) (*http.Response, *AppError) {
+	return c.DoApiRequest(http.MethodGet, c.ApiUrl+url, "", etag)
+}
+
+func (c *Client4) DoApiPost(url string, data string) (*http.Response, *AppError) {
+	return c.DoApiRequest(http.MethodPost, c.ApiUrl+url, data, "")
+}
+
+func (c *Client4) DoApiPut(url string, data string) (*http.Response, *AppError) {
+	return c.DoApiRequest(http.MethodPut, c.ApiUrl+url, data, "")
+}
+
+func (c *Client4) DoApiDelete(url string) (*http.Response, *AppError) {
+	return c.DoApiRequest(http.MethodDelete, c.ApiUrl+url, "", "")
+}
+
+func (c *Client4) DoApiRequest(method, url, data, etag string) (*http.Response, *AppError) {
+	rq, _ := http.NewRequest(method, url, strings.NewReader(data))
+	rq.Close = true
+
+	if len(etag) > 0 {
+		rq.Header.Set(HEADER_ETAG_CLIENT, etag)
+	}
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0)
+	} else if rp.StatusCode == 304 {
+		return rp, nil
+	} else if rp.StatusCode >= 300 {
+		defer closeBody(rp)
+		return rp, AppErrorFromJson(rp.Body)
+	} else {
+		return rp, nil
+	}
+}
+
+func (c *Client4) DoUploadFile(url string, data []byte, contentType string) (*FileUploadResponse, *Response) {
+	rq, _ := http.NewRequest("POST", c.ApiUrl+url, bytes.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, BuildErrorResponse(rp, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0))
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return FileUploadResponseFromJson(rp.Body), BuildResponse(rp)
+		}
+	}
+}
+
+func (c *Client4) DoEmojiUploadFile(url string, data []byte, contentType string) (*Emoji, *Response) {
+	rq, _ := http.NewRequest("POST", c.ApiUrl+url, bytes.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, BuildErrorResponse(rp, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0))
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return EmojiFromJson(rp.Body), BuildResponse(rp)
+		}
+	}
+}
+
+func (c *Client4) DoUploadImportTeam(url string, data []byte, contentType string) (map[string]string, *Response) {
+	rq, _ := http.NewRequest("POST", c.ApiUrl+url, bytes.NewReader(data))
+	rq.Header.Set("Content-Type", contentType)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, BuildErrorResponse(rp, NewAppError(url, "model.client.connecting.app_error", nil, err.Error(), 0))
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return MapFromJson(rp.Body), BuildResponse(rp)
+		}
+	}
+}
+
+// CheckStatusOK is a convenience function for checking the standard OK response
+// from the web service.
+func CheckStatusOK(r *http.Response) bool {
+	m := MapFromJson(r.Body)
+	defer closeBody(r)
+
+	if m != nil && m[STATUS] == STATUS_OK {
+		return true
+	}
+
+	return false
+}
+
+// Authentication Section
+
+// LoginById authenticates a user by user id and password.
+func (c *Client4) LoginById(id string, password string) (*User, *Response) {
+	m := make(map[string]string)
+	m["id"] = id
+	m["password"] = password
+	return c.login(m)
+}
+
+// Login authenticates a user by login id, which can be username, email or some sort
+// of SSO identifier based on server configuration, and a password.
+func (c *Client4) Login(loginId string, password string) (*User, *Response) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	return c.login(m)
+}
+
+// LoginByLdap authenticates a user by LDAP id and password.
+func (c *Client4) LoginByLdap(loginId string, password string) (*User, *Response) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	m["ldap_only"] = "true"
+	return c.login(m)
+}
+
+// LoginWithDevice authenticates a user by login id (username, email or some sort
+// of SSO identifier based on configuration), password and attaches a device id to
+// the session.
+func (c *Client4) LoginWithDevice(loginId string, password string, deviceId string) (*User, *Response) {
+	m := make(map[string]string)
+	m["login_id"] = loginId
+	m["password"] = password
+	m["device_id"] = deviceId
+	return c.login(m)
+}
+
+func (c *Client4) login(m map[string]string) (*User, *Response) {
+	if r, err := c.DoApiPost("/users/login", MapToJson(m)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		c.AuthToken = r.Header.Get(HEADER_TOKEN)
+		c.AuthType = HEADER_BEARER
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Logout terminates the current user's session.
+func (c *Client4) Logout() (bool, *Response) {
+	if r, err := c.DoApiPost("/users/logout", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		c.AuthToken = ""
+		c.AuthType = HEADER_BEARER
+
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// SwitchAccountType changes a user's login type from one type to another.
+func (c *Client4) SwitchAccountType(switchRequest *SwitchRequest) (string, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/login/switch", switchRequest.ToJson()); err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body)["follow_link"], BuildResponse(r)
+	}
+}
+
+// User Section
+
+// CreateUser creates a user in the system based on the provided user struct.
+func (c *Client4) CreateUser(user *User) (*User, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute(), user.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CreateUserWithHash creates a user in the system based on the provided user struct and hash created.
+func (c *Client4) CreateUserWithHash(user *User, hash, data string) (*User, *Response) {
+	var query string
+	if hash != "" && data != "" {
+		query = fmt.Sprintf("?d=%v&h=%v", url.QueryEscape(data), hash)
+	} else {
+		err := NewAppError("MissingHashOrData", "api.user.create_user.missing_hash_or_data.app_error", nil, "", http.StatusBadRequest)
+		return nil, &Response{StatusCode: err.StatusCode, Error: err}
+	}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+query, user.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CreateUserWithInviteId creates a user in the system based on the provided invited id.
+func (c *Client4) CreateUserWithInviteId(user *User, inviteId string) (*User, *Response) {
+	var query string
+	if inviteId != "" {
+		query = fmt.Sprintf("?iid=%v", url.QueryEscape(inviteId))
+	} else {
+		err := NewAppError("MissingInviteId", "api.user.create_user.missing_invite_id.app_error", nil, "", http.StatusBadRequest)
+		return nil, &Response{StatusCode: err.StatusCode, Error: err}
+	}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+query, user.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetMe returns the logged in user.
+func (c *Client4) GetMe(etag string) (*User, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(ME), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUser returns a user based on the provided user id string.
+func (c *Client4) GetUser(userId, etag string) (*User, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserByUsername returns a user based on the provided user name string.
+func (c *Client4) GetUserByUsername(userName, etag string) (*User, *Response) {
+	if r, err := c.DoApiGet(c.GetUserByUsernameRoute(userName), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserByEmail returns a user based on the provided user email string.
+func (c *Client4) GetUserByEmail(email, etag string) (*User, *Response) {
+	if r, err := c.DoApiGet(c.GetUserByEmailRoute(email), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AutocompleteUsersInTeam returns the users on a team based on search term.
+func (c *Client4) AutocompleteUsersInTeam(teamId string, username string, etag string) (*UserAutocomplete, *Response) {
+	query := fmt.Sprintf("?in_team=%v&name=%v", teamId, username)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+"/autocomplete"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAutocompleteFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AutocompleteUsersInChannel returns the users in a channel based on search term.
+func (c *Client4) AutocompleteUsersInChannel(teamId string, channelId string, username string, etag string) (*UserAutocomplete, *Response) {
+	query := fmt.Sprintf("?in_team=%v&in_channel=%v&name=%v", teamId, channelId, username)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+"/autocomplete"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAutocompleteFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AutocompleteUsers returns the users in the system based on search term.
+func (c *Client4) AutocompleteUsers(username string, etag string) (*UserAutocomplete, *Response) {
+	query := fmt.Sprintf("?name=%v", username)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+"/autocomplete"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAutocompleteFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetProfileImage gets user's profile image. Must be logged in or be a system administrator.
+func (c *Client4) GetProfileImage(userId, etag string) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/image", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetProfileImage", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// GetUsers returns a page of users on the system. Page counting starts at 0.
+func (c *Client4) GetUsers(page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersInTeam returns a page of users on a team. Page counting starts at 0.
+func (c *Client4) GetUsersInTeam(teamId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?in_team=%v&page=%v&per_page=%v", teamId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetNewUsersInTeam returns a page of users on a team. Page counting starts at 0.
+func (c *Client4) GetNewUsersInTeam(teamId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?sort=create_at&in_team=%v&page=%v&per_page=%v", teamId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetRecentlyActiveUsersInTeam returns a page of users on a team. Page counting starts at 0.
+func (c *Client4) GetRecentlyActiveUsersInTeam(teamId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?sort=last_activity_at&in_team=%v&page=%v&per_page=%v", teamId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersNotInTeam returns a page of users who are not in a team. Page counting starts at 0.
+func (c *Client4) GetUsersNotInTeam(teamId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?not_in_team=%v&page=%v&per_page=%v", teamId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersInChannel returns a page of users on a team. Page counting starts at 0.
+func (c *Client4) GetUsersInChannel(channelId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?in_channel=%v&page=%v&per_page=%v", channelId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersNotInChannel returns a page of users on a team. Page counting starts at 0.
+func (c *Client4) GetUsersNotInChannel(teamId, channelId string, page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?in_team=%v&not_in_channel=%v&page=%v&per_page=%v", teamId, channelId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersWithoutTeam returns a page of users on the system that aren't on any teams. Page counting starts at 0.
+func (c *Client4) GetUsersWithoutTeam(page int, perPage int, etag string) ([]*User, *Response) {
+	query := fmt.Sprintf("?without_team=1&page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUsersRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersByIds returns a list of users based on the provided user ids.
+func (c *Client4) GetUsersByIds(userIds []string) ([]*User, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/ids", ArrayToJson(userIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersByUsernames returns a list of users based on the provided usernames.
+func (c *Client4) GetUsersByUsernames(usernames []string) ([]*User, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/usernames", ArrayToJson(usernames)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SearchUsers returns a list of users based on some search criteria.
+func (c *Client4) SearchUsers(search *UserSearch) ([]*User, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/search", search.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateUser updates a user in the system based on the provided user struct.
+func (c *Client4) UpdateUser(user *User) (*User, *Response) {
+	if r, err := c.DoApiPut(c.GetUserRoute(user.Id), user.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PatchUser partially updates a user in the system. Any missing fields are not updated.
+func (c *Client4) PatchUser(userId string, patch *UserPatch) (*User, *Response) {
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/patch", patch.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateUserAuth updates a user AuthData (uthData, authService and password) in the system.
+func (c *Client4) UpdateUserAuth(userId string, userAuth *UserAuth) (*UserAuth, *Response) {
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/auth", userAuth.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAuthFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateUserMfa activates multi-factor authentication for a user if activate
+// is true and a valid code is provided. If activate is false, then code is not
+// required and multi-factor authentication is disabled for the user.
+func (c *Client4) UpdateUserMfa(userId, code string, activate bool) (bool, *Response) {
+	requestBody := make(map[string]interface{})
+	requestBody["activate"] = activate
+	requestBody["code"] = code
+
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/mfa", StringInterfaceToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// CheckUserMfa checks whether a user has MFA active on their account or not based on the
+// provided login id.
+func (c *Client4) CheckUserMfa(loginId string) (bool, *Response) {
+	requestBody := make(map[string]interface{})
+	requestBody["login_id"] = loginId
+
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/mfa", StringInterfaceToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		data := StringInterfaceFromJson(r.Body)
+		if mfaRequired, ok := data["mfa_required"].(bool); !ok {
+			return false, BuildResponse(r)
+		} else {
+			return mfaRequired, BuildResponse(r)
+		}
+	}
+}
+
+// GenerateMfaSecret will generate a new MFA secret for a user and return it as a string and
+// as a base64 encoded image QR code.
+func (c *Client4) GenerateMfaSecret(userId string) (*MfaSecret, *Response) {
+	if r, err := c.DoApiPost(c.GetUserRoute(userId)+"/mfa/generate", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MfaSecretFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateUserPassword updates a user's password. Must be logged in as the user or be a system administrator.
+func (c *Client4) UpdateUserPassword(userId, currentPassword, newPassword string) (bool, *Response) {
+	requestBody := map[string]string{"current_password": currentPassword, "new_password": newPassword}
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/password", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UpdateUserRoles updates a user's roles in the system. A user can have "system_user" and "system_admin" roles.
+func (c *Client4) UpdateUserRoles(userId, roles string) (bool, *Response) {
+	requestBody := map[string]string{"roles": roles}
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/roles", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UpdateUserActive updates status of a user whether active or not.
+func (c *Client4) UpdateUserActive(userId string, active bool) (bool, *Response) {
+	requestBody := make(map[string]interface{})
+	requestBody["active"] = active
+
+	if r, err := c.DoApiPut(c.GetUserRoute(userId)+"/active", StringInterfaceToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// DeleteUser deactivates a user in the system based on the provided user id string.
+func (c *Client4) DeleteUser(userId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetUserRoute(userId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// SendPasswordResetEmail will send a link for password resetting to a user with the
+// provided email.
+func (c *Client4) SendPasswordResetEmail(email string) (bool, *Response) {
+	requestBody := map[string]string{"email": email}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/password/reset/send", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// ResetPassword uses a recovery code to update reset a user's password.
+func (c *Client4) ResetPassword(token, newPassword string) (bool, *Response) {
+	requestBody := map[string]string{"token": token, "new_password": newPassword}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/password/reset", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetSessions returns a list of sessions based on the provided user id string.
+func (c *Client4) GetSessions(userId, etag string) ([]*Session, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/sessions", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return SessionsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RevokeSession revokes a user session based on the provided user id and session id strings.
+func (c *Client4) RevokeSession(userId, sessionId string) (bool, *Response) {
+	requestBody := map[string]string{"session_id": sessionId}
+	if r, err := c.DoApiPost(c.GetUserRoute(userId)+"/sessions/revoke", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// RevokeAllSessions revokes all sessions for the provided user id string.
+func (c *Client4) RevokeAllSessions(userId string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetUserRoute(userId)+"/sessions/revoke/all", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// AttachDeviceId attaches a mobile device ID to the current session.
+func (c *Client4) AttachDeviceId(deviceId string) (bool, *Response) {
+	requestBody := map[string]string{"device_id": deviceId}
+	if r, err := c.DoApiPut(c.GetUsersRoute()+"/sessions/device", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetTeamsUnreadForUser will return an array with TeamUnread objects that contain the amount
+// of unread messages and mentions the current user has for the teams it belongs to.
+// An optional team ID can be set to exclude that team from the results. Must be authenticated.
+func (c *Client4) GetTeamsUnreadForUser(userId, teamIdToExclude string) ([]*TeamUnread, *Response) {
+	optional := ""
+	if teamIdToExclude != "" {
+		optional += fmt.Sprintf("?exclude_team=%s", url.QueryEscape(teamIdToExclude))
+	}
+
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/teams/unread"+optional, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamsUnreadFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserAudits returns a list of audit based on the provided user id string.
+func (c *Client4) GetUserAudits(userId string, page int, perPage int, etag string) (Audits, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/audits"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return AuditsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// VerifyUserEmail will verify a user's email using the supplied token.
+func (c *Client4) VerifyUserEmail(token string) (bool, *Response) {
+	requestBody := map[string]string{"token": token}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/email/verify", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// SendVerificationEmail will send an email to the user with the provided email address, if
+// that user exists. The email will contain a link that can be used to verify the user's
+// email address.
+func (c *Client4) SendVerificationEmail(email string) (bool, *Response) {
+	requestBody := map[string]string{"email": email}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/email/verify/send", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// SetProfileImage sets profile image of the user
+func (c *Client4) SetProfileImage(userId string, data []byte) (bool, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("image", "profile.png"); err != nil {
+		return false, &Response{Error: NewAppError("SetProfileImage", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return false, &Response{Error: NewAppError("SetProfileImage", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return false, &Response{Error: NewAppError("SetProfileImage", "model.client.set_profile_user.writer.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	rq, _ := http.NewRequest("POST", c.ApiUrl+c.GetUserRoute(userId)+"/image", bytes.NewReader(body.Bytes()))
+	rq.Header.Set("Content-Type", writer.FormDataContentType())
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		// set to http.StatusForbidden(403)
+		return false, &Response{StatusCode: http.StatusForbidden, Error: NewAppError(c.GetUserRoute(userId)+"/image", "model.client.connecting.app_error", nil, err.Error(), 403)}
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return false, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return CheckStatusOK(rp), BuildResponse(rp)
+		}
+	}
+}
+
+// CreateUserAccessToken will generate a user access token that can be used in place
+// of a session token to access the REST API. Must have the 'create_user_access_token'
+// permission and if generating for another user, must have the 'edit_other_users'
+// permission. A non-blank description is required.
+func (c *Client4) CreateUserAccessToken(userId, description string) (*UserAccessToken, *Response) {
+	requestBody := map[string]string{"description": description}
+	if r, err := c.DoApiPost(c.GetUserRoute(userId)+"/tokens", MapToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAccessTokenFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserAccessTokens will get a page of access tokens' id, description, is_active
+// and the user_id in the system. The actual token will not be returned. Must have
+// the 'manage_system' permission.
+func (c *Client4) GetUserAccessTokens(page int, perPage int) ([]*UserAccessToken, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUserAccessTokensRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAccessTokenListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserAccessToken will get a user access tokens' id, description, is_active
+// and the user_id of the user it is for. The actual token will not be returned.
+// Must have the 'read_user_access_token' permission and if getting for another
+// user, must have the 'edit_other_users' permission.
+func (c *Client4) GetUserAccessToken(tokenId string) (*UserAccessToken, *Response) {
+	if r, err := c.DoApiGet(c.GetUserAccessTokenRoute(tokenId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAccessTokenFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUserAccessTokensForUser will get a paged list of user access tokens showing id,
+// description and user_id for each. The actual tokens will not be returned. Must have
+// the 'read_user_access_token' permission and if getting for another user, must have the
+// 'edit_other_users' permission.
+func (c *Client4) GetUserAccessTokensForUser(userId string, page, perPage int) ([]*UserAccessToken, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/tokens"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAccessTokenListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RevokeUserAccessToken will revoke a user access token by id. Must have the
+// 'revoke_user_access_token' permission and if revoking for another user, must have the
+// 'edit_other_users' permission.
+func (c *Client4) RevokeUserAccessToken(tokenId string) (bool, *Response) {
+	requestBody := map[string]string{"token_id": tokenId}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/tokens/revoke", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// SearchUserAccessTokens returns user access tokens matching the provided search term.
+func (c *Client4) SearchUserAccessTokens(search *UserAccessTokenSearch) ([]*UserAccessToken, *Response) {
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/tokens/search", search.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return UserAccessTokenListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DisableUserAccessToken will disable a user access token by id. Must have the
+// 'revoke_user_access_token' permission and if disabling for another user, must have the
+// 'edit_other_users' permission.
+func (c *Client4) DisableUserAccessToken(tokenId string) (bool, *Response) {
+	requestBody := map[string]string{"token_id": tokenId}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/tokens/disable", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// EnableUserAccessToken will enable a user access token by id. Must have the
+// 'create_user_access_token' permission and if enabling for another user, must have the
+// 'edit_other_users' permission.
+func (c *Client4) EnableUserAccessToken(tokenId string) (bool, *Response) {
+	requestBody := map[string]string{"token_id": tokenId}
+	if r, err := c.DoApiPost(c.GetUsersRoute()+"/tokens/enable", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Team Section
+
+// CreateTeam creates a team in the system based on the provided team struct.
+func (c *Client4) CreateTeam(team *Team) (*Team, *Response) {
+	if r, err := c.DoApiPost(c.GetTeamsRoute(), team.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeam returns a team based on the provided team id string.
+func (c *Client4) GetTeam(teamId, etag string) (*Team, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamRoute(teamId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetAllTeams returns all teams based on permissions.
+func (c *Client4) GetAllTeams(etag string, page int, perPage int) ([]*Team, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetTeamsRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeamByName returns a team based on the provided team name string.
+func (c *Client4) GetTeamByName(name, etag string) (*Team, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamByNameRoute(name), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SearchTeams returns teams matching the provided search term.
+func (c *Client4) SearchTeams(search *TeamSearch) ([]*Team, *Response) {
+	if r, err := c.DoApiPost(c.GetTeamsRoute()+"/search", search.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// TeamExists returns true or false if the team exist or not.
+func (c *Client4) TeamExists(name, etag string) (bool, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamByNameRoute(name)+"/exists", etag); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapBoolFromJson(r.Body)["exists"], BuildResponse(r)
+	}
+}
+
+// GetTeamsForUser returns a list of teams a user is on. Must be logged in as the user
+// or be a system administrator.
+func (c *Client4) GetTeamsForUser(userId, etag string) ([]*Team, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/teams", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeamMember returns a team member based on the provided team and user id strings.
+func (c *Client4) GetTeamMember(teamId, userId, etag string) (*TeamMember, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamMemberRoute(teamId, userId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateTeamMemberRoles will update the roles on a team for a user.
+func (c *Client4) UpdateTeamMemberRoles(teamId, userId, newRoles string) (bool, *Response) {
+	requestBody := map[string]string{"roles": newRoles}
+	if r, err := c.DoApiPut(c.GetTeamMemberRoute(teamId, userId)+"/roles", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UpdateTeam will update a team.
+func (c *Client4) UpdateTeam(team *Team) (*Team, *Response) {
+	if r, err := c.DoApiPut(c.GetTeamRoute(team.Id), team.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PatchTeam partially updates a team. Any missing fields are not updated.
+func (c *Client4) PatchTeam(teamId string, patch *TeamPatch) (*Team, *Response) {
+	if r, err := c.DoApiPut(c.GetTeamRoute(teamId)+"/patch", patch.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SoftDeleteTeam deletes the team softly (archive only, not permanent delete).
+func (c *Client4) SoftDeleteTeam(teamId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetTeamRoute(teamId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// PermanentDeleteTeam deletes the team, should only be used when needed for
+// compliance and the like
+func (c *Client4) PermanentDeleteTeam(teamId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetTeamRoute(teamId) + "?permanent=true"); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetTeamMembers returns team members based on the provided team id string.
+func (c *Client4) GetTeamMembers(teamId string, page int, perPage int, etag string) ([]*TeamMember, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetTeamMembersRoute(teamId)+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeamMembersForUser returns the team members for a user.
+func (c *Client4) GetTeamMembersForUser(userId string, etag string) ([]*TeamMember, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/teams/members", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeamMembersByIds will return an array of team members based on the
+// team id and a list of user ids provided. Must be authenticated.
+func (c *Client4) GetTeamMembersByIds(teamId string, userIds []string) ([]*TeamMember, *Response) {
+	if r, err := c.DoApiPost(fmt.Sprintf("/teams/%v/members/ids", teamId), ArrayToJson(userIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AddTeamMember adds user to a team and return a team member.
+func (c *Client4) AddTeamMember(teamId, userId string) (*TeamMember, *Response) {
+	member := &TeamMember{TeamId: teamId, UserId: userId}
+
+	if r, err := c.DoApiPost(c.GetTeamMembersRoute(teamId), member.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AddTeamMemberFromInvite adds a user to a team and return a team member using an invite id
+// or an invite hash/data pair.
+func (c *Client4) AddTeamMemberFromInvite(hash, dataToHash, inviteId string) (*TeamMember, *Response) {
+	var query string
+
+	if inviteId != "" {
+		query += fmt.Sprintf("?invite_id=%v", inviteId)
+	}
+
+	if hash != "" && dataToHash != "" {
+		query += fmt.Sprintf("?hash=%v&data=%v", hash, dataToHash)
+	}
+
+	if r, err := c.DoApiPost(c.GetTeamsRoute()+"/members/invite"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AddTeamMembers adds a number of users to a team and returns the team members.
+func (c *Client4) AddTeamMembers(teamId string, userIds []string) ([]*TeamMember, *Response) {
+	var members []*TeamMember
+	for _, userId := range userIds {
+		member := &TeamMember{TeamId: teamId, UserId: userId}
+		members = append(members, member)
+	}
+
+	if r, err := c.DoApiPost(c.GetTeamMembersRoute(teamId)+"/batch", TeamMembersToJson(members)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RemoveTeamMember will remove a user from a team.
+func (c *Client4) RemoveTeamMember(teamId, userId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetTeamMemberRoute(teamId, userId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetTeamStats returns a team stats based on the team id string.
+// Must be authenticated.
+func (c *Client4) GetTeamStats(teamId, etag string) (*TeamStats, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamStatsRoute(teamId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamStatsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetTeamUnread will return a TeamUnread object that contains the amount of
+// unread messages and mentions the user has for the specified team.
+// Must be authenticated.
+func (c *Client4) GetTeamUnread(teamId, userId string) (*TeamUnread, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+c.GetTeamRoute(teamId)+"/unread", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamUnreadFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ImportTeam will import an exported team from other app into a existing team.
+func (c *Client4) ImportTeam(data []byte, filesize int, importFrom, filename, teamId string) (map[string]string, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("file", filename); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if part, err := writer.CreateFormField("filesize"); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.file_size.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, strings.NewReader(strconv.Itoa(filesize))); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.file_size.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if part, err := writer.CreateFormField("importFrom"); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.import_from.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, strings.NewReader(importFrom)); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.import_from.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, &Response{Error: NewAppError("UploadImportTeam", "model.client.upload_post_attachment.writer.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	return c.DoUploadImportTeam(c.GetTeamImportRoute(teamId), body.Bytes(), writer.FormDataContentType())
+}
+
+// InviteUsersToTeam invite users by email to the team.
+func (c *Client4) InviteUsersToTeam(teamId string, userEmails []string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetTeamRoute(teamId)+"/invite/email", ArrayToJson(userEmails)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetTeamInviteInfo returns a team object from an invite id containing sanitized information.
+func (c *Client4) GetTeamInviteInfo(inviteId string) (*Team, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamsRoute()+"/invite/"+inviteId, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return TeamFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Channel Section
+
+// CreateChannel creates a channel based on the provided channel struct.
+func (c *Client4) CreateChannel(channel *Channel) (*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelsRoute(), channel.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateChannel update a channel based on the provided channel struct.
+func (c *Client4) UpdateChannel(channel *Channel) (*Channel, *Response) {
+	if r, err := c.DoApiPut(c.GetChannelRoute(channel.Id), channel.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PatchChannel partially updates a channel. Any missing fields are not updated.
+func (c *Client4) PatchChannel(channelId string, patch *ChannelPatch) (*Channel, *Response) {
+	if r, err := c.DoApiPut(c.GetChannelRoute(channelId)+"/patch", patch.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RestoreChannel restores a previously deleted channel. Any missing fields are not updated.
+func (c *Client4) RestoreChannel(channelId string) (*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelRoute(channelId)+"/restore", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CreateDirectChannel creates a direct message channel based on the two user
+// ids provided.
+func (c *Client4) CreateDirectChannel(userId1, userId2 string) (*Channel, *Response) {
+	requestBody := []string{userId1, userId2}
+	if r, err := c.DoApiPost(c.GetChannelsRoute()+"/direct", ArrayToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CreateGroupChannel creates a group message channel based on userIds provided
+func (c *Client4) CreateGroupChannel(userIds []string) (*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelsRoute()+"/group", ArrayToJson(userIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannel returns a channel based on the provided channel id string.
+func (c *Client4) GetChannel(channelId, etag string) (*Channel, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelStats returns statistics for a channel.
+func (c *Client4) GetChannelStats(channelId string, etag string) (*ChannelStats, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/stats", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelStatsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPinnedPosts gets a list of pinned posts.
+func (c *Client4) GetPinnedPosts(channelId string, etag string) (*PostList, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/pinned", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPublicChannelsForTeam returns a list of public channels based on the provided team id string.
+func (c *Client4) GetPublicChannelsForTeam(teamId string, page int, perPage int, etag string) ([]*Channel, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetChannelsForTeamRoute(teamId)+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelSliceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetDeletedChannelsForTeam returns a list of public channels based on the provided team id string.
+func (c *Client4) GetDeletedChannelsForTeam(teamId string, page int, perPage int, etag string) ([]*Channel, *Response) {
+	query := fmt.Sprintf("/deleted?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetChannelsForTeamRoute(teamId)+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelSliceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPublicChannelsByIdsForTeam returns a list of public channels based on provided team id string
+func (c *Client4) GetPublicChannelsByIdsForTeam(teamId string, channelIds []string) ([]*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelsForTeamRoute(teamId)+"/ids", ArrayToJson(channelIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelSliceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelsForTeamForUser returns a list channels of on a team for a user.
+func (c *Client4) GetChannelsForTeamForUser(teamId, userId, etag string) ([]*Channel, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+c.GetTeamRoute(teamId)+"/channels", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelSliceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SearchChannels returns the channels on a team matching the provided search term.
+func (c *Client4) SearchChannels(teamId string, search *ChannelSearch) ([]*Channel, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelsForTeamRoute(teamId)+"/search", search.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelSliceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteChannel deletes channel based on the provided channel id string.
+func (c *Client4) DeleteChannel(channelId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetChannelRoute(channelId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetChannelByName returns a channel based on the provided channel name and team id strings.
+func (c *Client4) GetChannelByName(channelName, teamId string, etag string) (*Channel, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelByNameRoute(channelName, teamId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelByNameForTeamName returns a channel based on the provided channel name and team name strings.
+func (c *Client4) GetChannelByNameForTeamName(channelName, teamName string, etag string) (*Channel, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelByNameForTeamNameRoute(channelName, teamName), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelMembers gets a page of channel members.
+func (c *Client4) GetChannelMembers(channelId string, page, perPage int, etag string) (*ChannelMembers, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetChannelMembersRoute(channelId)+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelMembersByIds gets the channel members in a channel for a list of user ids.
+func (c *Client4) GetChannelMembersByIds(channelId string, userIds []string) (*ChannelMembers, *Response) {
+	if r, err := c.DoApiPost(c.GetChannelMembersRoute(channelId)+"/ids", ArrayToJson(userIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMembersFromJson(r.Body), BuildResponse(r)
+
+	}
+}
+
+// GetChannelMember gets a channel member.
+func (c *Client4) GetChannelMember(channelId, userId, etag string) (*ChannelMember, *Response) {
+	if r, err := c.DoApiGet(c.GetChannelMemberRoute(channelId, userId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelMembersForUser gets all the channel members for a user on a team.
+func (c *Client4) GetChannelMembersForUser(userId, teamId, etag string) (*ChannelMembers, *Response) {
+	if r, err := c.DoApiGet(fmt.Sprintf(c.GetUserRoute(userId)+"/teams/%v/channels/members", teamId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMembersFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ViewChannel performs a view action for a user. Synonymous with switching channels or marking channels as read by a user.
+func (c *Client4) ViewChannel(userId string, view *ChannelView) (*ChannelViewResponse, *Response) {
+	url := fmt.Sprintf(c.GetChannelsRoute()+"/members/%v/view", userId)
+	if r, err := c.DoApiPost(url, view.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelViewResponseFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetChannelUnread will return a ChannelUnread object that contains the number of
+// unread messages and mentions for a user.
+func (c *Client4) GetChannelUnread(channelId, userId string) (*ChannelUnread, *Response) {
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+c.GetChannelRoute(channelId)+"/unread", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelUnreadFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateChannelRoles will update the roles on a channel for a user.
+func (c *Client4) UpdateChannelRoles(channelId, userId, roles string) (bool, *Response) {
+	requestBody := map[string]string{"roles": roles}
+	if r, err := c.DoApiPut(c.GetChannelMemberRoute(channelId, userId)+"/roles", MapToJson(requestBody)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UpdateChannelNotifyProps will update the notification properties on a channel for a user.
+func (c *Client4) UpdateChannelNotifyProps(channelId, userId string, props map[string]string) (bool, *Response) {
+	if r, err := c.DoApiPut(c.GetChannelMemberRoute(channelId, userId)+"/notify_props", MapToJson(props)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// AddChannelMember adds user to channel and return a channel member.
+func (c *Client4) AddChannelMember(channelId, userId string) (*ChannelMember, *Response) {
+	requestBody := map[string]string{"user_id": userId}
+	if r, err := c.DoApiPost(c.GetChannelMembersRoute(channelId)+"", MapToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AddChannelMemberWithRootId adds user to channel and return a channel member. Post add to channel message has the postRootId.
+func (c *Client4) AddChannelMemberWithRootId(channelId, userId, postRootId string) (*ChannelMember, *Response) {
+	requestBody := map[string]string{"user_id": userId, "post_root_id": postRootId}
+	if r, err := c.DoApiPost(c.GetChannelMembersRoute(channelId)+"", MapToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ChannelMemberFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RemoveUserFromChannel will delete the channel member object for a user, effectively removing the user from a channel.
+func (c *Client4) RemoveUserFromChannel(channelId, userId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetChannelMemberRoute(channelId, userId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Post Section
+
+// CreatePost creates a post based on the provided post struct.
+func (c *Client4) CreatePost(post *Post) (*Post, *Response) {
+	if r, err := c.DoApiPost(c.GetPostsRoute(), post.ToUnsanitizedJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdatePost updates a post based on the provided post struct.
+func (c *Client4) UpdatePost(postId string, post *Post) (*Post, *Response) {
+	if r, err := c.DoApiPut(c.GetPostRoute(postId), post.ToUnsanitizedJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PatchPost partially updates a post. Any missing fields are not updated.
+func (c *Client4) PatchPost(postId string, patch *PostPatch) (*Post, *Response) {
+	if r, err := c.DoApiPut(c.GetPostRoute(postId)+"/patch", patch.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PinPost pin a post based on provided post id string.
+func (c *Client4) PinPost(postId string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPostRoute(postId)+"/pin", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UnpinPost unpin a post based on provided post id string.
+func (c *Client4) UnpinPost(postId string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPostRoute(postId)+"/unpin", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetPost gets a single post.
+func (c *Client4) GetPost(postId string, etag string) (*Post, *Response) {
+	if r, err := c.DoApiGet(c.GetPostRoute(postId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeletePost deletes a post from the provided post id string.
+func (c *Client4) DeletePost(postId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetPostRoute(postId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetPostThread gets a post with all the other posts in the same thread.
+func (c *Client4) GetPostThread(postId string, etag string) (*PostList, *Response) {
+	if r, err := c.DoApiGet(c.GetPostRoute(postId)+"/thread", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPostsForChannel gets a page of posts with an array for ordering for a channel.
+func (c *Client4) GetPostsForChannel(channelId string, page, perPage int, etag string) (*PostList, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/posts"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetFlaggedPostsForUser returns flagged posts of a user based on user id string.
+func (c *Client4) GetFlaggedPostsForUser(userId string, page int, perPage int) (*PostList, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/posts/flagged"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetFlaggedPostsForUserInTeam returns flagged posts in team of a user based on user id string.
+func (c *Client4) GetFlaggedPostsForUserInTeam(userId string, teamId string, page int, perPage int) (*PostList, *Response) {
+	if len(teamId) == 0 || len(teamId) != 26 {
+		return nil, &Response{StatusCode: http.StatusBadRequest, Error: NewAppError("GetFlaggedPostsForUserInTeam", "model.client.get_flagged_posts_in_team.missing_parameter.app_error", nil, "", http.StatusBadRequest)}
+	}
+
+	query := fmt.Sprintf("?team_id=%v&page=%v&per_page=%v", teamId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/posts/flagged"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetFlaggedPostsForUserInChannel returns flagged posts in channel of a user based on user id string.
+func (c *Client4) GetFlaggedPostsForUserInChannel(userId string, channelId string, page int, perPage int) (*PostList, *Response) {
+	if len(channelId) == 0 || len(channelId) != 26 {
+		return nil, &Response{StatusCode: http.StatusBadRequest, Error: NewAppError("GetFlaggedPostsForUserInChannel", "model.client.get_flagged_posts_in_channel.missing_parameter.app_error", nil, "", http.StatusBadRequest)}
+	}
+
+	query := fmt.Sprintf("?channel_id=%v&page=%v&per_page=%v", channelId, page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/posts/flagged"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPostsSince gets posts created after a specified time as Unix time in milliseconds.
+func (c *Client4) GetPostsSince(channelId string, time int64) (*PostList, *Response) {
+	query := fmt.Sprintf("?since=%v", time)
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/posts"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPostsAfter gets a page of posts that were posted after the post provided.
+func (c *Client4) GetPostsAfter(channelId, postId string, page, perPage int, etag string) (*PostList, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&after=%v", page, perPage, postId)
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/posts"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetPostsBefore gets a page of posts that were posted before the post provided.
+func (c *Client4) GetPostsBefore(channelId, postId string, page, perPage int, etag string) (*PostList, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&before=%v", page, perPage, postId)
+	if r, err := c.DoApiGet(c.GetChannelRoute(channelId)+"/posts"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SearchPosts returns any posts with matching terms string.
+func (c *Client4) SearchPosts(teamId string, terms string, isOrSearch bool) (*PostList, *Response) {
+	requestBody := map[string]interface{}{"terms": terms, "is_or_search": isOrSearch}
+	if r, err := c.DoApiPost(c.GetTeamRoute(teamId)+"/posts/search", StringInterfaceToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PostListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DoPostAction performs a post action.
+func (c *Client4) DoPostAction(postId, actionId string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPostRoute(postId)+"/actions/"+actionId, ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// File Section
+
+// UploadFile will upload a file to a channel, to be later attached to a post.
+func (c *Client4) UploadFile(data []byte, channelId string, filename string) (*FileUploadResponse, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("files", filename); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if part, err := writer.CreateFormField("channel_id"); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.channel_id.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, strings.NewReader(channelId)); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.channel_id.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPostAttachment", "model.client.upload_post_attachment.writer.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	return c.DoUploadFile(c.GetFilesRoute(), body.Bytes(), writer.FormDataContentType())
+}
+
+// GetFile gets the bytes for a file by id.
+func (c *Client4) GetFile(fileId string) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetFile", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// DownloadFile gets the bytes for a file by id, optionally adding headers to force the browser to download it
+func (c *Client4) DownloadFile(fileId string, download bool) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+fmt.Sprintf("?download=%v", download), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("DownloadFile", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// GetFileThumbnail gets the bytes for a file by id.
+func (c *Client4) GetFileThumbnail(fileId string) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/thumbnail", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetFileThumbnail", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// DownloadFileThumbnail gets the bytes for a file by id, optionally adding headers to force the browser to download it.
+func (c *Client4) DownloadFileThumbnail(fileId string, download bool) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+fmt.Sprintf("/thumbnail?download=%v", download), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("DownloadFileThumbnail", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// GetFileLink gets the public link of a file by id.
+func (c *Client4) GetFileLink(fileId string) (string, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/link", ""); err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		return MapFromJson(r.Body)["link"], BuildResponse(r)
+	}
+}
+
+// GetFilePreview gets the bytes for a file by id.
+func (c *Client4) GetFilePreview(fileId string) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/preview", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetFilePreview", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// DownloadFilePreview gets the bytes for a file by id.
+func (c *Client4) DownloadFilePreview(fileId string, download bool) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+fmt.Sprintf("/preview?download=%v", download), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("DownloadFilePreview", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// GetFileInfo gets all the file info objects.
+func (c *Client4) GetFileInfo(fileId string) (*FileInfo, *Response) {
+	if r, err := c.DoApiGet(c.GetFileRoute(fileId)+"/info", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return FileInfoFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetFileInfosForPost gets all the file info objects attached to a post.
+func (c *Client4) GetFileInfosForPost(postId string, etag string) ([]*FileInfo, *Response) {
+	if r, err := c.DoApiGet(c.GetPostRoute(postId)+"/files/info", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return FileInfosFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// General/System Section
+
+// GetPing will return ok if the running goRoutines are below the threshold and unhealthy for above.
+func (c *Client4) GetPing() (string, *Response) {
+	if r, err := c.DoApiGet(c.GetSystemRoute()+"/ping", ""); r != nil && r.StatusCode == 500 {
+		defer r.Body.Close()
+		return "unhealthy", BuildErrorResponse(r, err)
+	} else if err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body)["status"], BuildResponse(r)
+	}
+}
+
+// TestEmail will attempt to connect to the configured SMTP server.
+func (c *Client4) TestEmail() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetTestEmailRoute(), ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetConfig will retrieve the server config with some sanitized items.
+func (c *Client4) GetConfig() (*Config, *Response) {
+	if r, err := c.DoApiGet(c.GetConfigRoute(), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ConfigFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ReloadConfig will reload the server configuration.
+func (c *Client4) ReloadConfig() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetConfigRoute()+"/reload", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetOldClientConfig will retrieve the parts of the server configuration needed by the
+// client, formatted in the old format.
+func (c *Client4) GetOldClientConfig(etag string) (map[string]string, *Response) {
+	if r, err := c.DoApiGet(c.GetConfigRoute()+"/client?format=old", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOldClientLicense will retrieve the parts of the server license needed by the
+// client, formatted in the old format.
+func (c *Client4) GetOldClientLicense(etag string) (map[string]string, *Response) {
+	if r, err := c.DoApiGet(c.GetLicenseRoute()+"/client?format=old", etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DatabaseRecycle will recycle the connections. Discard current connection and get new one.
+func (c *Client4) DatabaseRecycle() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetDatabaseRoute()+"/recycle", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// InvalidateCaches will purge the cache and can affect the performance while is cleaning.
+func (c *Client4) InvalidateCaches() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetCacheRoute()+"/invalidate", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// UpdateConfig will update the server configuration.
+func (c *Client4) UpdateConfig(config *Config) (*Config, *Response) {
+	if r, err := c.DoApiPut(c.GetConfigRoute(), config.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ConfigFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UploadLicenseFile will add a license file to the system.
+func (c *Client4) UploadLicenseFile(data []byte) (bool, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("license", "test-license.mattermost-license"); err != nil {
+		return false, &Response{Error: NewAppError("UploadLicenseFile", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return false, &Response{Error: NewAppError("UploadLicenseFile", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return false, &Response{Error: NewAppError("UploadLicenseFile", "model.client.set_profile_user.writer.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	rq, _ := http.NewRequest("POST", c.ApiUrl+c.GetLicenseRoute(), bytes.NewReader(body.Bytes()))
+	rq.Header.Set("Content-Type", writer.FormDataContentType())
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return false, &Response{StatusCode: http.StatusForbidden, Error: NewAppError(c.GetLicenseRoute(), "model.client.connecting.app_error", nil, err.Error(), http.StatusForbidden)}
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return false, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return CheckStatusOK(rp), BuildResponse(rp)
+		}
+	}
+}
+
+// RemoveLicenseFile will remove the server license it exists. Note that this will
+// disable all enterprise features.
+func (c *Client4) RemoveLicenseFile() (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetLicenseRoute()); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetAnalyticsOld will retrieve analytics using the old format. New format is not
+// available but the "/analytics" endpoint is reserved for it. The "name" argument is optional
+// and defaults to "standard". The "teamId" argument is optional and will limit results
+// to a specific team.
+func (c *Client4) GetAnalyticsOld(name, teamId string) (AnalyticsRows, *Response) {
+	query := fmt.Sprintf("?name=%v&teamId=%v", name, teamId)
+	if r, err := c.DoApiGet(c.GetAnalyticsRoute()+"/old"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return AnalyticsRowsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Webhooks Section
+
+// CreateIncomingWebhook creates an incoming webhook for a channel.
+func (c *Client4) CreateIncomingWebhook(hook *IncomingWebhook) (*IncomingWebhook, *Response) {
+	if r, err := c.DoApiPost(c.GetIncomingWebhooksRoute(), hook.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return IncomingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateIncomingWebhook updates an incoming webhook for a channel.
+func (c *Client4) UpdateIncomingWebhook(hook *IncomingWebhook) (*IncomingWebhook, *Response) {
+	if r, err := c.DoApiPut(c.GetIncomingWebhookRoute(hook.Id), hook.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return IncomingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetIncomingWebhooks returns a page of incoming webhooks on the system. Page counting starts at 0.
+func (c *Client4) GetIncomingWebhooks(page int, perPage int, etag string) ([]*IncomingWebhook, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetIncomingWebhooksRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return IncomingWebhookListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetIncomingWebhooksForTeam returns a page of incoming webhooks for a team. Page counting starts at 0.
+func (c *Client4) GetIncomingWebhooksForTeam(teamId string, page int, perPage int, etag string) ([]*IncomingWebhook, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&team_id=%v", page, perPage, teamId)
+	if r, err := c.DoApiGet(c.GetIncomingWebhooksRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return IncomingWebhookListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetIncomingWebhook returns an Incoming webhook given the hook ID
+func (c *Client4) GetIncomingWebhook(hookID string, etag string) (*IncomingWebhook, *Response) {
+	if r, err := c.DoApiGet(c.GetIncomingWebhookRoute(hookID), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return IncomingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteIncomingWebhook deletes and Incoming Webhook given the hook ID
+func (c *Client4) DeleteIncomingWebhook(hookID string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetIncomingWebhookRoute(hookID)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// CreateOutgoingWebhook creates an outgoing webhook for a team or channel.
+func (c *Client4) CreateOutgoingWebhook(hook *OutgoingWebhook) (*OutgoingWebhook, *Response) {
+	if r, err := c.DoApiPost(c.GetOutgoingWebhooksRoute(), hook.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateOutgoingWebhook creates an outgoing webhook for a team or channel.
+func (c *Client4) UpdateOutgoingWebhook(hook *OutgoingWebhook) (*OutgoingWebhook, *Response) {
+	if r, err := c.DoApiPut(c.GetOutgoingWebhookRoute(hook.Id), hook.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOutgoingWebhooks returns a page of outgoing webhooks on the system. Page counting starts at 0.
+func (c *Client4) GetOutgoingWebhooks(page int, perPage int, etag string) ([]*OutgoingWebhook, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetOutgoingWebhooksRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOutgoingWebhook outgoing webhooks on the system requested by Hook Id.
+func (c *Client4) GetOutgoingWebhook(hookId string) (*OutgoingWebhook, *Response) {
+	if r, err := c.DoApiGet(c.GetOutgoingWebhookRoute(hookId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOutgoingWebhooksForChannel returns a page of outgoing webhooks for a channel. Page counting starts at 0.
+func (c *Client4) GetOutgoingWebhooksForChannel(channelId string, page int, perPage int, etag string) ([]*OutgoingWebhook, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&channel_id=%v", page, perPage, channelId)
+	if r, err := c.DoApiGet(c.GetOutgoingWebhooksRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOutgoingWebhooksForTeam returns a page of outgoing webhooks for a team. Page counting starts at 0.
+func (c *Client4) GetOutgoingWebhooksForTeam(teamId string, page int, perPage int, etag string) ([]*OutgoingWebhook, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&team_id=%v", page, perPage, teamId)
+	if r, err := c.DoApiGet(c.GetOutgoingWebhooksRoute()+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RegenOutgoingHookToken regenerate the outgoing webhook token.
+func (c *Client4) RegenOutgoingHookToken(hookId string) (*OutgoingWebhook, *Response) {
+	if r, err := c.DoApiPost(c.GetOutgoingWebhookRoute(hookId)+"/regen_token", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OutgoingWebhookFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteOutgoingWebhook delete the outgoing webhook on the system requested by Hook Id.
+func (c *Client4) DeleteOutgoingWebhook(hookId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetOutgoingWebhookRoute(hookId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Preferences Section
+
+// GetPreferences returns the user's preferences.
+func (c *Client4) GetPreferences(userId string) (Preferences, *Response) {
+	if r, err := c.DoApiGet(c.GetPreferencesRoute(userId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		preferences, _ := PreferencesFromJson(r.Body)
+		defer closeBody(r)
+		return preferences, BuildResponse(r)
+	}
+}
+
+// UpdatePreferences saves the user's preferences.
+func (c *Client4) UpdatePreferences(userId string, preferences *Preferences) (bool, *Response) {
+	if r, err := c.DoApiPut(c.GetPreferencesRoute(userId), preferences.ToJson()); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return true, BuildResponse(r)
+	}
+}
+
+// DeletePreferences deletes the user's preferences.
+func (c *Client4) DeletePreferences(userId string, preferences *Preferences) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPreferencesRoute(userId)+"/delete", preferences.ToJson()); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return true, BuildResponse(r)
+	}
+}
+
+// GetPreferencesByCategory returns the user's preferences from the provided category string.
+func (c *Client4) GetPreferencesByCategory(userId string, category string) (Preferences, *Response) {
+	url := fmt.Sprintf(c.GetPreferencesRoute(userId)+"/%s", category)
+	if r, err := c.DoApiGet(url, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		preferences, _ := PreferencesFromJson(r.Body)
+		defer closeBody(r)
+		return preferences, BuildResponse(r)
+	}
+}
+
+// GetPreferenceByCategoryAndName returns the user's preferences from the provided category and preference name string.
+func (c *Client4) GetPreferenceByCategoryAndName(userId string, category string, preferenceName string) (*Preference, *Response) {
+	url := fmt.Sprintf(c.GetPreferencesRoute(userId)+"/%s/name/%v", category, preferenceName)
+	if r, err := c.DoApiGet(url, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PreferenceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// SAML Section
+
+// GetSamlMetadata returns metadata for the SAML configuration.
+func (c *Client4) GetSamlMetadata() (string, *Response) {
+	if r, err := c.DoApiGet(c.GetSamlRoute()+"/metadata", ""); err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		buf := new(bytes.Buffer)
+		buf.ReadFrom(r.Body)
+		return buf.String(), BuildResponse(r)
+	}
+}
+
+func samlFileToMultipart(data []byte, filename string) ([]byte, *multipart.Writer, error) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("certificate", filename); err != nil {
+		return nil, nil, err
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return nil, nil, err
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, nil, err
+	}
+
+	return body.Bytes(), writer, nil
+}
+
+// UploadSamlIdpCertificate will upload an IDP certificate for SAML and set the config to use it.
+func (c *Client4) UploadSamlIdpCertificate(data []byte, filename string) (bool, *Response) {
+	body, writer, err := samlFileToMultipart(data, filename)
+	if err != nil {
+		return false, &Response{Error: NewAppError("UploadSamlIdpCertificate", "model.client.upload_saml_cert.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	_, resp := c.DoUploadFile(c.GetSamlRoute()+"/certificate/idp", body, writer.FormDataContentType())
+	return resp.Error == nil, resp
+}
+
+// UploadSamlPublicCertificate will upload a public certificate for SAML and set the config to use it.
+func (c *Client4) UploadSamlPublicCertificate(data []byte, filename string) (bool, *Response) {
+	body, writer, err := samlFileToMultipart(data, filename)
+	if err != nil {
+		return false, &Response{Error: NewAppError("UploadSamlPublicCertificate", "model.client.upload_saml_cert.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	_, resp := c.DoUploadFile(c.GetSamlRoute()+"/certificate/public", body, writer.FormDataContentType())
+	return resp.Error == nil, resp
+}
+
+// UploadSamlPrivateCertificate will upload a private key for SAML and set the config to use it.
+func (c *Client4) UploadSamlPrivateCertificate(data []byte, filename string) (bool, *Response) {
+	body, writer, err := samlFileToMultipart(data, filename)
+	if err != nil {
+		return false, &Response{Error: NewAppError("UploadSamlPrivateCertificate", "model.client.upload_saml_cert.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	_, resp := c.DoUploadFile(c.GetSamlRoute()+"/certificate/private", body, writer.FormDataContentType())
+	return resp.Error == nil, resp
+}
+
+// DeleteSamlIdpCertificate deletes the SAML IDP certificate from the server and updates the config to not use it and disable SAML.
+func (c *Client4) DeleteSamlIdpCertificate() (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetSamlRoute() + "/certificate/idp"); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// DeleteSamlPublicCertificate deletes the SAML IDP certificate from the server and updates the config to not use it and disable SAML.
+func (c *Client4) DeleteSamlPublicCertificate() (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetSamlRoute() + "/certificate/public"); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// DeleteSamlPrivateCertificate deletes the SAML IDP certificate from the server and updates the config to not use it and disable SAML.
+func (c *Client4) DeleteSamlPrivateCertificate() (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetSamlRoute() + "/certificate/private"); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetSamlCertificateStatus returns metadata for the SAML configuration.
+func (c *Client4) GetSamlCertificateStatus() (*SamlCertificateStatus, *Response) {
+	if r, err := c.DoApiGet(c.GetSamlRoute()+"/certificate/status", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return SamlCertificateStatusFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Compliance Section
+
+// CreateComplianceReport creates an incoming webhook for a channel.
+func (c *Client4) CreateComplianceReport(report *Compliance) (*Compliance, *Response) {
+	if r, err := c.DoApiPost(c.GetComplianceReportsRoute(), report.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ComplianceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetComplianceReports returns list of compliance reports.
+func (c *Client4) GetComplianceReports(page, perPage int) (Compliances, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetComplianceReportsRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CompliancesFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetComplianceReport returns a compliance report.
+func (c *Client4) GetComplianceReport(reportId string) (*Compliance, *Response) {
+	if r, err := c.DoApiGet(c.GetComplianceReportRoute(reportId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ComplianceFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DownloadComplianceReport returns a full compliance report as a file.
+func (c *Client4) DownloadComplianceReport(reportId string) ([]byte, *Response) {
+	var rq *http.Request
+	rq, _ = http.NewRequest("GET", c.ApiUrl+c.GetComplianceReportRoute(reportId), nil)
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, "BEARER "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, &Response{Error: NewAppError("DownloadComplianceReport", "model.client.connecting.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else if data, err := ioutil.ReadAll(rp.Body); err != nil {
+			return nil, BuildErrorResponse(rp, NewAppError("DownloadComplianceReport", "model.client.read_file.app_error", nil, err.Error(), rp.StatusCode))
+		} else {
+			return data, BuildResponse(rp)
+		}
+	}
+}
+
+// Cluster Section
+
+// GetClusterStatus returns the status of all the configured cluster nodes.
+func (c *Client4) GetClusterStatus() ([]*ClusterInfo, *Response) {
+	if r, err := c.DoApiGet(c.GetClusterRoute()+"/status", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ClusterInfosFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// LDAP Section
+
+// SyncLdap will force a sync with the configured LDAP server.
+func (c *Client4) SyncLdap() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetLdapRoute()+"/sync", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// TestLdap will attempt to connect to the configured LDAP server and return OK if configured
+// correctly.
+func (c *Client4) TestLdap() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetLdapRoute()+"/test", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Audits Section
+
+// GetAudits returns a list of audits for the whole system.
+func (c *Client4) GetAudits(page int, perPage int, etag string) (Audits, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet("/audits"+query, etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return AuditsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Brand Section
+
+// GetBrandImage retrieves the previously uploaded brand image.
+func (c *Client4) GetBrandImage() ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetBrandRoute()+"/image", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if r.StatusCode >= 300 {
+			return nil, BuildErrorResponse(r, AppErrorFromJson(r.Body))
+		} else if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetBrandImage", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// UploadBrandImage sets the brand image for the system.
+func (c *Client4) UploadBrandImage(data []byte) (bool, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("image", "brand.png"); err != nil {
+		return false, &Response{Error: NewAppError("UploadBrandImage", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(data)); err != nil {
+		return false, &Response{Error: NewAppError("UploadBrandImage", "model.client.set_profile_user.no_file.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return false, &Response{Error: NewAppError("UploadBrandImage", "model.client.set_profile_user.writer.app_error", nil, err.Error(), http.StatusBadRequest)}
+	}
+
+	rq, _ := http.NewRequest("POST", c.ApiUrl+c.GetBrandRoute()+"/image", bytes.NewReader(body.Bytes()))
+	rq.Header.Set("Content-Type", writer.FormDataContentType())
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return false, &Response{StatusCode: http.StatusForbidden, Error: NewAppError(c.GetBrandRoute()+"/image", "model.client.connecting.app_error", nil, err.Error(), http.StatusForbidden)}
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return false, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return CheckStatusOK(rp), BuildResponse(rp)
+		}
+	}
+}
+
+// Logs Section
+
+// GetLogs page of logs as a string array.
+func (c *Client4) GetLogs(page, perPage int) ([]string, *Response) {
+	query := fmt.Sprintf("?page=%v&logs_per_page=%v", page, perPage)
+	if r, err := c.DoApiGet("/logs"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ArrayFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// PostLog is a convenience Web Service call so clients can log messages into
+// the server-side logs.  For example we typically log javascript error messages
+// into the server-side.  It returns the log message if the logging was successful.
+func (c *Client4) PostLog(message map[string]string) (map[string]string, *Response) {
+	if r, err := c.DoApiPost("/logs", MapToJson(message)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// OAuth Section
+
+// CreateOAuthApp will register a new OAuth 2.0 client application with Mattermost acting as an OAuth 2.0 service provider.
+func (c *Client4) CreateOAuthApp(app *OAuthApp) (*OAuthApp, *Response) {
+	if r, err := c.DoApiPost(c.GetOAuthAppsRoute(), app.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateOAuthApp
+func (c *Client4) UpdateOAuthApp(app *OAuthApp) (*OAuthApp, *Response) {
+	if r, err := c.DoApiPut(c.GetOAuthAppRoute(app.Id), app.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOAuthApps gets a page of registered OAuth 2.0 client applications with Mattermost acting as an OAuth 2.0 service provider.
+func (c *Client4) GetOAuthApps(page, perPage int) ([]*OAuthApp, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetOAuthAppsRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOAuthApp gets a registered OAuth 2.0 client application with Mattermost acting as an OAuth 2.0 service provider.
+func (c *Client4) GetOAuthApp(appId string) (*OAuthApp, *Response) {
+	if r, err := c.DoApiGet(c.GetOAuthAppRoute(appId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetOAuthAppInfo gets a sanitized version of a registered OAuth 2.0 client application with Mattermost acting as an OAuth 2.0 service provider.
+func (c *Client4) GetOAuthAppInfo(appId string) (*OAuthApp, *Response) {
+	if r, err := c.DoApiGet(c.GetOAuthAppRoute(appId)+"/info", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteOAuthApp deletes a registered OAuth 2.0 client application.
+func (c *Client4) DeleteOAuthApp(appId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetOAuthAppRoute(appId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// RegenerateOAuthAppSecret regenerates the client secret for a registered OAuth 2.0 client application.
+func (c *Client4) RegenerateOAuthAppSecret(appId string) (*OAuthApp, *Response) {
+	if r, err := c.DoApiPost(c.GetOAuthAppRoute(appId)+"/regen_secret", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetAuthorizedOAuthAppsForUser gets a page of OAuth 2.0 client applications the user has authorized to use access their account.
+func (c *Client4) GetAuthorizedOAuthAppsForUser(userId string, page, perPage int) ([]*OAuthApp, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetUserRoute(userId)+"/oauth/apps/authorized"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return OAuthAppListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AuthorizeOAuthApp will authorize an OAuth 2.0 client application to access a user's account and provide a redirect link to follow.
+func (c *Client4) AuthorizeOAuthApp(authRequest *AuthorizeRequest) (string, *Response) {
+	if r, err := c.DoApiRequest(http.MethodPost, c.Url+"/oauth/authorize", authRequest.ToJson(), ""); err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body)["redirect"], BuildResponse(r)
+	}
+}
+
+// DeauthorizeOAuthApp will deauthorize an OAuth 2.0 client application from accessing a user's account.
+func (c *Client4) DeauthorizeOAuthApp(appId string) (bool, *Response) {
+	requestData := map[string]string{"client_id": appId}
+	if r, err := c.DoApiRequest(http.MethodPost, c.Url+"/oauth/deauthorize", MapToJson(requestData), ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Elasticsearch Section
+
+// TestElasticsearch will attempt to connect to the configured Elasticsearch server and return OK if configured
+// correctly.
+func (c *Client4) TestElasticsearch() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetElasticsearchRoute()+"/test", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// PurgeElasticsearchIndexes immediately deletes all Elasticsearch indexes.
+func (c *Client4) PurgeElasticsearchIndexes() (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetElasticsearchRoute()+"/purge_indexes", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Data Retention Section
+
+// GetDataRetentionPolicy will get the current server data retention policy details.
+func (c *Client4) GetDataRetentionPolicy() (*DataRetentionPolicy, *Response) {
+	if r, err := c.DoApiGet(c.GetDataRetentionRoute()+"/policy", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return DataRetentionPolicyFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Commands Section
+
+// CreateCommand will create a new command if the user have the right permissions.
+func (c *Client4) CreateCommand(cmd *Command) (*Command, *Response) {
+	if r, err := c.DoApiPost(c.GetCommandsRoute(), cmd.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateCommand updates a command based on the provided Command struct
+func (c *Client4) UpdateCommand(cmd *Command) (*Command, *Response) {
+	if r, err := c.DoApiPut(c.GetCommandRoute(cmd.Id), cmd.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteCommand deletes a command based on the provided command id string
+func (c *Client4) DeleteCommand(commandId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetCommandRoute(commandId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// ListCommands will retrieve a list of commands available in the team.
+func (c *Client4) ListCommands(teamId string, customOnly bool) ([]*Command, *Response) {
+	query := fmt.Sprintf("?team_id=%v&custom_only=%v", teamId, customOnly)
+	if r, err := c.DoApiGet(c.GetCommandsRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ExecuteCommand executes a given slash command.
+func (c *Client4) ExecuteCommand(channelId, command string) (*CommandResponse, *Response) {
+	commandArgs := &CommandArgs{
+		ChannelId: channelId,
+		Command:   command,
+	}
+	if r, err := c.DoApiPost(c.GetCommandsRoute()+"/execute", commandArgs.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandResponseFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ExecuteCommand executes a given slash command against the specified team
+// Use this when executing slash commands in a DM/GM, since the team id cannot be inferred in that case
+func (c *Client4) ExecuteCommandWithTeam(channelId, teamId, command string) (*CommandResponse, *Response) {
+	commandArgs := &CommandArgs{
+		ChannelId: channelId,
+		TeamId:    teamId,
+		Command:   command,
+	}
+	if r, err := c.DoApiPost(c.GetCommandsRoute()+"/execute", commandArgs.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandResponseFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ListCommands will retrieve a list of commands available in the team.
+func (c *Client4) ListAutocompleteCommands(teamId string) ([]*Command, *Response) {
+	if r, err := c.DoApiGet(c.GetTeamAutoCompleteCommandsRoute(teamId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CommandListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RegenCommandToken will create a new token if the user have the right permissions.
+func (c *Client4) RegenCommandToken(commandId string) (string, *Response) {
+	if r, err := c.DoApiPut(c.GetCommandRoute(commandId)+"/regen_token", ""); err != nil {
+		return "", BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body)["token"], BuildResponse(r)
+	}
+}
+
+// Status Section
+
+// GetUserStatus returns a user based on the provided user id string.
+func (c *Client4) GetUserStatus(userId, etag string) (*Status, *Response) {
+	if r, err := c.DoApiGet(c.GetUserStatusRoute(userId), etag); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return StatusFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetUsersStatusesByIds returns a list of users status based on the provided user ids.
+func (c *Client4) GetUsersStatusesByIds(userIds []string) ([]*Status, *Response) {
+	if r, err := c.DoApiPost(c.GetUserStatusesRoute()+"/ids", ArrayToJson(userIds)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return StatusListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// UpdateUserStatus sets a user's status based on the provided user id string.
+func (c *Client4) UpdateUserStatus(userId string, userStatus *Status) (*Status, *Response) {
+	if r, err := c.DoApiPut(c.GetUserStatusRoute(userId), userStatus.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return StatusFromJson(r.Body), BuildResponse(r)
+
+	}
+}
+
+// Webrtc Section
+
+// GetWebrtcToken returns a valid token, stun server and turn server with credentials to
+// use with the Mattermost WebRTC service.
+func (c *Client4) GetWebrtcToken() (*WebrtcInfoResponse, *Response) {
+	if r, err := c.DoApiGet("/webrtc/token", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return WebrtcInfoResponseFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Emoji Section
+
+// CreateEmoji will save an emoji to the server if the current user has permission
+// to do so. If successful, the provided emoji will be returned with its Id field
+// filled in. Otherwise, an error will be returned.
+func (c *Client4) CreateEmoji(emoji *Emoji, image []byte, filename string) (*Emoji, *Response) {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("image", filename); err != nil {
+		return nil, &Response{StatusCode: http.StatusForbidden, Error: NewAppError("CreateEmoji", "model.client.create_emoji.image.app_error", nil, err.Error(), 0)}
+	} else if _, err = io.Copy(part, bytes.NewBuffer(image)); err != nil {
+		return nil, &Response{StatusCode: http.StatusForbidden, Error: NewAppError("CreateEmoji", "model.client.create_emoji.image.app_error", nil, err.Error(), 0)}
+	}
+
+	if err := writer.WriteField("emoji", emoji.ToJson()); err != nil {
+		return nil, &Response{StatusCode: http.StatusForbidden, Error: NewAppError("CreateEmoji", "model.client.create_emoji.emoji.app_error", nil, err.Error(), 0)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, &Response{StatusCode: http.StatusForbidden, Error: NewAppError("CreateEmoji", "model.client.create_emoji.writer.app_error", nil, err.Error(), 0)}
+	}
+
+	return c.DoEmojiUploadFile(c.GetEmojisRoute(), body.Bytes(), writer.FormDataContentType())
+}
+
+// GetEmojiList returns a page of custom emoji on the system.
+func (c *Client4) GetEmojiList(page, perPage int) ([]*Emoji, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v", page, perPage)
+	if r, err := c.DoApiGet(c.GetEmojisRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetSortedEmojiList returns a page of custom emoji on the system sorted based on the sort
+// parameter, blank for no sorting and "name" to sort by emoji names.
+func (c *Client4) GetSortedEmojiList(page, perPage int, sort string) ([]*Emoji, *Response) {
+	query := fmt.Sprintf("?page=%v&per_page=%v&sort=%v", page, perPage, sort)
+	if r, err := c.DoApiGet(c.GetEmojisRoute()+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteEmoji delete an custom emoji on the provided emoji id string.
+func (c *Client4) DeleteEmoji(emojiId string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetEmojiRoute(emojiId)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetEmoji returns a custom emoji based on the emojiId string.
+func (c *Client4) GetEmoji(emojiId string) (*Emoji, *Response) {
+	if r, err := c.DoApiGet(c.GetEmojiRoute(emojiId), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetEmojiByName returns a custom emoji based on the name string.
+func (c *Client4) GetEmojiByName(name string) (*Emoji, *Response) {
+	if r, err := c.DoApiGet(c.GetEmojiByNameRoute(name), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetEmojiImage returns the emoji image.
+func (c *Client4) GetEmojiImage(emojiId string) ([]byte, *Response) {
+	if r, err := c.DoApiGet(c.GetEmojiRoute(emojiId)+"/image", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+
+		if data, err := ioutil.ReadAll(r.Body); err != nil {
+			return nil, BuildErrorResponse(r, NewAppError("GetEmojiImage", "model.client.read_file.app_error", nil, err.Error(), r.StatusCode))
+		} else {
+			return data, BuildResponse(r)
+		}
+	}
+}
+
+// SearchEmoji returns a list of emoji matching some search criteria.
+func (c *Client4) SearchEmoji(search *EmojiSearch) ([]*Emoji, *Response) {
+	if r, err := c.DoApiPost(c.GetEmojisRoute()+"/search", search.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// AutocompleteEmoji returns a list of emoji starting with or matching name.
+func (c *Client4) AutocompleteEmoji(name string, etag string) ([]*Emoji, *Response) {
+	query := fmt.Sprintf("?name=%v", name)
+	if r, err := c.DoApiGet(c.GetEmojisRoute()+"/autocomplete"+query, ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return EmojiListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Reaction Section
+
+// SaveReaction saves an emoji reaction for a post. Returns the saved reaction if successful, otherwise an error will be returned.
+func (c *Client4) SaveReaction(reaction *Reaction) (*Reaction, *Response) {
+	if r, err := c.DoApiPost(c.GetReactionsRoute(), reaction.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ReactionFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetReactions returns a list of reactions to a post.
+func (c *Client4) GetReactions(postId string) ([]*Reaction, *Response) {
+	if r, err := c.DoApiGet(c.GetPostRoute(postId)+"/reactions", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ReactionsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// DeleteReaction deletes reaction of a user in a post.
+func (c *Client4) DeleteReaction(reaction *Reaction) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetUserRoute(reaction.UserId) + c.GetPostRoute(reaction.PostId) + fmt.Sprintf("/reactions/%v", reaction.EmojiName)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Open Graph Metadata Section
+
+// OpenGraph return the open graph metadata for a particular url if the site have the metadata
+func (c *Client4) OpenGraph(url string) (map[string]string, *Response) {
+	requestBody := make(map[string]string)
+	requestBody["url"] = url
+
+	if r, err := c.DoApiPost(c.GetOpenGraphRoute(), MapToJson(requestBody)); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return MapFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Jobs Section
+
+// GetJob gets a single job.
+func (c *Client4) GetJob(id string) (*Job, *Response) {
+	if r, err := c.DoApiGet(c.GetJobsRoute()+fmt.Sprintf("/%v", id), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return JobFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// Get all jobs, sorted with the job that was created most recently first.
+func (c *Client4) GetJobs(page int, perPage int) ([]*Job, *Response) {
+	if r, err := c.DoApiGet(c.GetJobsRoute()+fmt.Sprintf("?page=%v&per_page=%v", page, perPage), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return JobsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// GetJobsByType gets all jobs of a given type, sorted with the job that was created most recently first.
+func (c *Client4) GetJobsByType(jobType string, page int, perPage int) ([]*Job, *Response) {
+	if r, err := c.DoApiGet(c.GetJobsRoute()+fmt.Sprintf("/type/%v?page=%v&per_page=%v", jobType, page, perPage), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return JobsFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CreateJob creates a job based on the provided job struct.
+func (c *Client4) CreateJob(job *Job) (*Job, *Response) {
+	if r, err := c.DoApiPost(c.GetJobsRoute(), job.ToJson()); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return JobFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// CancelJob requests the cancellation of the job with the provided Id.
+func (c *Client4) CancelJob(jobId string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetJobsRoute()+fmt.Sprintf("/%v/cancel", jobId), ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// Plugin Section
+
+// UploadPlugin takes an io.Reader stream pointing to the contents of a .tar.gz plugin.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) UploadPlugin(file io.Reader) (*Manifest, *Response) {
+	body := new(bytes.Buffer)
+	writer := multipart.NewWriter(body)
+
+	if part, err := writer.CreateFormFile("plugin", "plugin.tar.gz"); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPlugin", "model.client.writer.app_error", nil, err.Error(), 0)}
+	} else if _, err = io.Copy(part, file); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPlugin", "model.client.writer.app_error", nil, err.Error(), 0)}
+	}
+
+	if err := writer.Close(); err != nil {
+		return nil, &Response{Error: NewAppError("UploadPlugin", "model.client.writer.app_error", nil, err.Error(), 0)}
+	}
+
+	rq, _ := http.NewRequest("POST", c.ApiUrl+c.GetPluginsRoute(), body)
+	rq.Header.Set("Content-Type", writer.FormDataContentType())
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, BuildErrorResponse(rp, NewAppError("UploadPlugin", "model.client.connecting.app_error", nil, err.Error(), 0))
+	} else {
+		defer closeBody(rp)
+
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return ManifestFromJson(rp.Body), BuildResponse(rp)
+		}
+	}
+}
+
+// GetPlugins will return a list of plugin manifests for currently active plugins.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) GetPlugins() (*PluginsResponse, *Response) {
+	if r, err := c.DoApiGet(c.GetPluginsRoute(), ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return PluginsResponseFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// RemovePlugin will deactivate and delete a plugin.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) RemovePlugin(id string) (bool, *Response) {
+	if r, err := c.DoApiDelete(c.GetPluginRoute(id)); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// GetWebappPlugins will return a list of plugins that the webapp should download.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) GetWebappPlugins() ([]*Manifest, *Response) {
+	if r, err := c.DoApiGet(c.GetPluginsRoute()+"/webapp", ""); err != nil {
+		return nil, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return ManifestListFromJson(r.Body), BuildResponse(r)
+	}
+}
+
+// ActivatePlugin will activate an plugin installed.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) ActivatePlugin(id string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPluginRoute(id)+"/activate", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
+
+// DeactivatePlugin will deactivate an active plugin.
+// WARNING: PLUGINS ARE STILL EXPERIMENTAL. THIS FUNCTION IS SUBJECT TO CHANGE.
+func (c *Client4) DeactivatePlugin(id string) (bool, *Response) {
+	if r, err := c.DoApiPost(c.GetPluginRoute(id)+"/deactivate", ""); err != nil {
+		return false, BuildErrorResponse(r, err)
+	} else {
+		defer closeBody(r)
+		return CheckStatusOK(r), BuildResponse(r)
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/cluster_discovery.go b/vendor/github.com/mattermost/mattermost-server/model/cluster_discovery.go
new file mode 100644
index 00000000..89e5fc95
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/cluster_discovery.go
@@ -0,0 +1,133 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"os"
+)
+
+const (
+	CDS_OFFLINE_AFTER_MILLIS = 1000 * 60 * 30 // 30 minutes
+	CDS_TYPE_APP             = "mattermost_app"
+)
+
+type ClusterDiscovery struct {
+	Id          string `json:"id"`
+	Type        string `json:"type"`
+	ClusterName string `json:"cluster_name"`
+	Hostname    string `json:"hostname"`
+	GossipPort  int32  `json:"gossip_port"`
+	Port        int32  `json:"port"`
+	CreateAt    int64  `json:"create_at"`
+	LastPingAt  int64  `json:"last_ping_at"`
+}
+
+func (o *ClusterDiscovery) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	if o.CreateAt == 0 {
+		o.CreateAt = GetMillis()
+		o.LastPingAt = o.CreateAt
+	}
+}
+
+func (o *ClusterDiscovery) AutoFillHostname() {
+	// attempt to set the hostname from the OS
+	if len(o.Hostname) == 0 {
+		if hn, err := os.Hostname(); err == nil {
+			o.Hostname = hn
+		}
+	}
+}
+
+func (o *ClusterDiscovery) AutoFillIpAddress() {
+	// attempt to set the hostname to the first non-local IP address
+	if len(o.Hostname) == 0 {
+		o.Hostname = GetServerIpAddress()
+	}
+}
+
+func (o *ClusterDiscovery) IsEqual(in *ClusterDiscovery) bool {
+	if in == nil {
+		return false
+	}
+
+	if o.Type != in.Type {
+		return false
+	}
+
+	if o.ClusterName != in.ClusterName {
+		return false
+	}
+
+	if o.Hostname != in.Hostname {
+		return false
+	}
+
+	return true
+}
+
+func FilterClusterDiscovery(vs []*ClusterDiscovery, f func(*ClusterDiscovery) bool) []*ClusterDiscovery {
+	copy := make([]*ClusterDiscovery, 0)
+	for _, v := range vs {
+		if f(v) {
+			copy = append(copy, v)
+		}
+	}
+
+	return copy
+}
+
+func (o *ClusterDiscovery) IsValid() *AppError {
+	if len(o.Id) != 26 {
+		return NewAppError("Channel.IsValid", "model.channel.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ClusterName) == 0 {
+		return NewAppError("ClusterDiscovery.IsValid", "ClusterName must be set", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Type) == 0 {
+		return NewAppError("ClusterDiscovery.IsValid", "Type must be set", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Hostname) == 0 {
+		return NewAppError("ClusterDiscovery.IsValid", "Hostname must be set", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("ClusterDiscovery.IsValid", "CreateAt must be set", nil, "", http.StatusBadRequest)
+	}
+
+	if o.LastPingAt == 0 {
+		return NewAppError("ClusterDiscovery.IsValid", "LastPingAt must be set", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *ClusterDiscovery) ToJson() string {
+	b, err := json.Marshal(o)
+	if err != nil {
+		return ""
+	}
+
+	return string(b)
+}
+
+func ClusterDiscoveryFromJson(data io.Reader) *ClusterDiscovery {
+	decoder := json.NewDecoder(data)
+	var me ClusterDiscovery
+	err := decoder.Decode(&me)
+	if err == nil {
+		return &me
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/cluster_info.go b/vendor/github.com/mattermost/mattermost-server/model/cluster_info.go
new file mode 100644
index 00000000..a8d63ec3
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/cluster_info.go
@@ -0,0 +1,50 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"strings"
+)
+
+type ClusterInfo struct {
+	Id         string `json:"id"`
+	Version    string `json:"version"`
+	ConfigHash string `json:"config_hash"`
+	IpAddress  string `json:"ipaddress"`
+	Hostname   string `json:"hostname"`
+}
+
+func (me *ClusterInfo) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func (me *ClusterInfo) Copy() *ClusterInfo {
+	json := me.ToJson()
+	return ClusterInfoFromJson(strings.NewReader(json))
+}
+
+func ClusterInfoFromJson(data io.Reader) *ClusterInfo {
+	var me *ClusterInfo
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
+
+func ClusterInfosToJson(objmap []*ClusterInfo) string {
+	b, _ := json.Marshal(objmap)
+	return string(b)
+}
+
+func ClusterInfosFromJson(data io.Reader) []*ClusterInfo {
+	decoder := json.NewDecoder(data)
+
+	var objmap []*ClusterInfo
+	if err := decoder.Decode(&objmap); err != nil {
+		return make([]*ClusterInfo, 0)
+	} else {
+		return objmap
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/cluster_message.go b/vendor/github.com/mattermost/mattermost-server/model/cluster_message.go
new file mode 100644
index 00000000..f060c4ac
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/cluster_message.go
@@ -0,0 +1,46 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	CLUSTER_EVENT_PUBLISH                                           = "publish"
+	CLUSTER_EVENT_UPDATE_STATUS                                     = "update_status"
+	CLUSTER_EVENT_INVALIDATE_ALL_CACHES                             = "inv_all_caches"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_REACTIONS                    = "inv_reactions"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_WEBHOOK                      = "inv_webhook"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_CHANNEL_POSTS                = "inv_channel_posts"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_CHANNEL_MEMBERS_NOTIFY_PROPS = "inv_channel_members_notify_props"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_CHANNEL_MEMBERS              = "inv_channel_members"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_CHANNEL_BY_NAME              = "inv_channel_name"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_CHANNEL                      = "inv_channel"
+	CLUSTER_EVENT_INVALIDATE_CACHE_FOR_USER                         = "inv_user"
+	CLUSTER_EVENT_CLEAR_SESSION_CACHE_FOR_USER                      = "clear_session_user"
+
+	CLUSTER_SEND_BEST_EFFORT = "best_effort"
+	CLUSTER_SEND_RELIABLE    = "reliable"
+)
+
+type ClusterMessage struct {
+	Event            string            `json:"event"`
+	SendType         string            `json:"-"`
+	WaitForAllToSend bool              `json:"-"`
+	Data             string            `json:"data,omitempty"`
+	Props            map[string]string `json:"props,omitempty"`
+}
+
+func (o *ClusterMessage) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ClusterMessageFromJson(data io.Reader) *ClusterMessage {
+	var o *ClusterMessage
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/cluster_stats.go b/vendor/github.com/mattermost/mattermost-server/model/cluster_stats.go
new file mode 100644
index 00000000..064f7b81
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/cluster_stats.go
@@ -0,0 +1,27 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ClusterStats struct {
+	Id                        string `json:"id"`
+	TotalWebsocketConnections int    `json:"total_websocket_connections"`
+	TotalReadDbConnections    int    `json:"total_read_db_connections"`
+	TotalMasterDbConnections  int    `json:"total_master_db_connections"`
+}
+
+func (me *ClusterStats) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func ClusterStatsFromJson(data io.Reader) *ClusterStats {
+	var me *ClusterStats
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/command.go b/vendor/github.com/mattermost/mattermost-server/model/command.go
new file mode 100644
index 00000000..b23e5020
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/command.go
@@ -0,0 +1,139 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+)
+
+const (
+	COMMAND_METHOD_POST = "P"
+	COMMAND_METHOD_GET  = "G"
+	MIN_TRIGGER_LENGTH  = 1
+	MAX_TRIGGER_LENGTH  = 128
+)
+
+type Command struct {
+	Id               string `json:"id"`
+	Token            string `json:"token"`
+	CreateAt         int64  `json:"create_at"`
+	UpdateAt         int64  `json:"update_at"`
+	DeleteAt         int64  `json:"delete_at"`
+	CreatorId        string `json:"creator_id"`
+	TeamId           string `json:"team_id"`
+	Trigger          string `json:"trigger"`
+	Method           string `json:"method"`
+	Username         string `json:"username"`
+	IconURL          string `json:"icon_url"`
+	AutoComplete     bool   `json:"auto_complete"`
+	AutoCompleteDesc string `json:"auto_complete_desc"`
+	AutoCompleteHint string `json:"auto_complete_hint"`
+	DisplayName      string `json:"display_name"`
+	Description      string `json:"description"`
+	URL              string `json:"url"`
+}
+
+func (o *Command) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func CommandFromJson(data io.Reader) *Command {
+	var o *Command
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func CommandListToJson(l []*Command) string {
+	b, _ := json.Marshal(l)
+	return string(b)
+}
+
+func CommandListFromJson(data io.Reader) []*Command {
+	var o []*Command
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Command) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Token) != 26 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.token.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.update_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.CreatorId) != 26 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.TeamId) != 26 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.team_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Trigger) < MIN_TRIGGER_LENGTH || len(o.Trigger) > MAX_TRIGGER_LENGTH || strings.Index(o.Trigger, "/") == 0 || strings.Contains(o.Trigger, " ") {
+		return NewAppError("Command.IsValid", "model.command.is_valid.trigger.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.URL) == 0 || len(o.URL) > 1024 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.url.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !IsValidHttpUrl(o.URL) {
+		return NewAppError("Command.IsValid", "model.command.is_valid.url_http.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(o.Method == COMMAND_METHOD_GET || o.Method == COMMAND_METHOD_POST) {
+		return NewAppError("Command.IsValid", "model.command.is_valid.method.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.DisplayName) > 64 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.display_name.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Description) > 128 {
+		return NewAppError("Command.IsValid", "model.command.is_valid.description.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *Command) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	if o.Token == "" {
+		o.Token = NewId()
+	}
+
+	o.CreateAt = GetMillis()
+	o.UpdateAt = o.CreateAt
+}
+
+func (o *Command) PreUpdate() {
+	o.UpdateAt = GetMillis()
+}
+
+func (o *Command) Sanitize() {
+	o.Token = ""
+	o.CreatorId = ""
+	o.Method = ""
+	o.URL = ""
+	o.Username = ""
+	o.IconURL = ""
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/command_args.go b/vendor/github.com/mattermost/mattermost-server/model/command_args.go
new file mode 100644
index 00000000..4a635a1a
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/command_args.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+
+	goi18n "github.com/nicksnyder/go-i18n/i18n"
+)
+
+type CommandArgs struct {
+	UserId    string               `json:"user_id"`
+	ChannelId string               `json:"channel_id"`
+	TeamId    string               `json:"team_id"`
+	RootId    string               `json:"root_id"`
+	ParentId  string               `json:"parent_id"`
+	Command   string               `json:"command"`
+	SiteURL   string               `json:"-"`
+	T         goi18n.TranslateFunc `json:"-"`
+	Session   Session              `json:"-"`
+}
+
+func (o *CommandArgs) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func CommandArgsFromJson(data io.Reader) *CommandArgs {
+	var o *CommandArgs
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/command_response.go b/vendor/github.com/mattermost/mattermost-server/model/command_response.go
new file mode 100644
index 00000000..cac7e845
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/command_response.go
@@ -0,0 +1,61 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"strings"
+)
+
+const (
+	COMMAND_RESPONSE_TYPE_IN_CHANNEL = "in_channel"
+	COMMAND_RESPONSE_TYPE_EPHEMERAL  = "ephemeral"
+)
+
+type CommandResponse struct {
+	ResponseType string             `json:"response_type"`
+	Text         string             `json:"text"`
+	Username     string             `json:"username"`
+	IconURL      string             `json:"icon_url"`
+	Type         string             `json:"type"`
+	Props        StringInterface    `json:"props"`
+	GotoLocation string             `json:"goto_location"`
+	Attachments  []*SlackAttachment `json:"attachments"`
+}
+
+func (o *CommandResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func CommandResponseFromHTTPBody(contentType string, body io.Reader) *CommandResponse {
+	if strings.TrimSpace(strings.Split(contentType, ";")[0]) == "application/json" {
+		return CommandResponseFromJson(body)
+	}
+	if b, err := ioutil.ReadAll(body); err == nil {
+		return CommandResponseFromPlainText(string(b))
+	}
+	return nil
+}
+
+func CommandResponseFromPlainText(text string) *CommandResponse {
+	return &CommandResponse{
+		Text: text,
+	}
+}
+
+func CommandResponseFromJson(data io.Reader) *CommandResponse {
+	decoder := json.NewDecoder(data)
+	var o CommandResponse
+
+	if err := decoder.Decode(&o); err != nil {
+		return nil
+	}
+
+	o.Attachments = StringifySlackFieldValue(o.Attachments)
+
+	return &o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/command_webhook.go b/vendor/github.com/mattermost/mattermost-server/model/command_webhook.go
new file mode 100644
index 00000000..0b00e00b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/command_webhook.go
@@ -0,0 +1,65 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"net/http"
+)
+
+type CommandWebhook struct {
+	Id        string
+	CreateAt  int64
+	CommandId string
+	UserId    string
+	ChannelId string
+	RootId    string
+	ParentId  string
+	UseCount  int
+}
+
+const (
+	COMMAND_WEBHOOK_LIFETIME = 1000 * 60 * 30
+)
+
+func (o *CommandWebhook) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	if o.CreateAt == 0 {
+		o.CreateAt = GetMillis()
+	}
+}
+
+func (o *CommandWebhook) IsValid() *AppError {
+	if len(o.Id) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.CommandId) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.command_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.UserId) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ChannelId) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.channel_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.RootId) != 0 && len(o.RootId) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.root_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ParentId) != 0 && len(o.ParentId) != 26 {
+		return NewAppError("CommandWebhook.IsValid", "model.command_hook.parent_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/compliance.go b/vendor/github.com/mattermost/mattermost-server/model/compliance.go
new file mode 100644
index 00000000..5546b783
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/compliance.go
@@ -0,0 +1,119 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+)
+
+const (
+	COMPLIANCE_STATUS_CREATED  = "created"
+	COMPLIANCE_STATUS_RUNNING  = "running"
+	COMPLIANCE_STATUS_FINISHED = "finished"
+	COMPLIANCE_STATUS_FAILED   = "failed"
+	COMPLIANCE_STATUS_REMOVED  = "removed"
+
+	COMPLIANCE_TYPE_DAILY = "daily"
+	COMPLIANCE_TYPE_ADHOC = "adhoc"
+)
+
+type Compliance struct {
+	Id       string `json:"id"`
+	CreateAt int64  `json:"create_at"`
+	UserId   string `json:"user_id"`
+	Status   string `json:"status"`
+	Count    int    `json:"count"`
+	Desc     string `json:"desc"`
+	Type     string `json:"type"`
+	StartAt  int64  `json:"start_at"`
+	EndAt    int64  `json:"end_at"`
+	Keywords string `json:"keywords"`
+	Emails   string `json:"emails"`
+}
+
+type Compliances []Compliance
+
+func (o *Compliance) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (me *Compliance) PreSave() {
+	if me.Id == "" {
+		me.Id = NewId()
+	}
+
+	if me.Status == "" {
+		me.Status = COMPLIANCE_STATUS_CREATED
+	}
+
+	me.Count = 0
+	me.Emails = NormalizeEmail(me.Emails)
+	me.Keywords = strings.ToLower(me.Keywords)
+
+	me.CreateAt = GetMillis()
+}
+
+func (me *Compliance) JobName() string {
+	jobName := me.Type
+	if me.Type == COMPLIANCE_TYPE_DAILY {
+		jobName += "-" + me.Desc
+	}
+
+	jobName += "-" + me.Id
+
+	return jobName
+}
+
+func (me *Compliance) IsValid() *AppError {
+
+	if len(me.Id) != 26 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if me.CreateAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(me.Desc) > 512 || len(me.Desc) == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.desc.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if me.StartAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.start_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if me.EndAt == 0 {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.end_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if me.EndAt <= me.StartAt {
+		return NewAppError("Compliance.IsValid", "model.compliance.is_valid.start_end_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func ComplianceFromJson(data io.Reader) *Compliance {
+	var o *Compliance
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o Compliances) ToJson() string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func CompliancesFromJson(data io.Reader) Compliances {
+	var o Compliances
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/compliance_post.go b/vendor/github.com/mattermost/mattermost-server/model/compliance_post.go
new file mode 100644
index 00000000..3751c586
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/compliance_post.go
@@ -0,0 +1,114 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"regexp"
+	"time"
+)
+
+type CompliancePost struct {
+
+	// From Team
+	TeamName        string
+	TeamDisplayName string
+
+	// From Channel
+	ChannelName        string
+	ChannelDisplayName string
+
+	// From User
+	UserUsername string
+	UserEmail    string
+	UserNickname string
+
+	// From Post
+	PostId         string
+	PostCreateAt   int64
+	PostUpdateAt   int64
+	PostDeleteAt   int64
+	PostRootId     string
+	PostParentId   string
+	PostOriginalId string
+	PostMessage    string
+	PostType       string
+	PostProps      string
+	PostHashtags   string
+	PostFileIds    string
+}
+
+func CompliancePostHeader() []string {
+	return []string{
+		"TeamName",
+		"TeamDisplayName",
+
+		"ChannelName",
+		"ChannelDisplayName",
+
+		"UserUsername",
+		"UserEmail",
+		"UserNickname",
+
+		"PostId",
+		"PostCreateAt",
+		"PostUpdateAt",
+		"PostDeleteAt",
+		"PostRootId",
+		"PostParentId",
+		"PostOriginalId",
+		"PostMessage",
+		"PostType",
+		"PostProps",
+		"PostHashtags",
+		"PostFileIds",
+	}
+}
+
+func cleanComplianceStrings(in string) string {
+	if matched, _ := regexp.MatchString("^\\s*(=|\\+|\\-)", in); matched {
+		return "'" + in
+
+	} else {
+		return in
+	}
+}
+
+func (me *CompliancePost) Row() []string {
+
+	postDeleteAt := ""
+	if me.PostDeleteAt > 0 {
+		postDeleteAt = time.Unix(0, me.PostDeleteAt*int64(1000*1000)).Format(time.RFC3339)
+	}
+
+	postUpdateAt := ""
+	if me.PostUpdateAt != me.PostCreateAt {
+		postUpdateAt = time.Unix(0, me.PostUpdateAt*int64(1000*1000)).Format(time.RFC3339)
+	}
+
+	return []string{
+		cleanComplianceStrings(me.TeamName),
+		cleanComplianceStrings(me.TeamDisplayName),
+
+		cleanComplianceStrings(me.ChannelName),
+		cleanComplianceStrings(me.ChannelDisplayName),
+
+		cleanComplianceStrings(me.UserUsername),
+		cleanComplianceStrings(me.UserEmail),
+		cleanComplianceStrings(me.UserNickname),
+
+		me.PostId,
+		time.Unix(0, me.PostCreateAt*int64(1000*1000)).Format(time.RFC3339),
+		postUpdateAt,
+		postDeleteAt,
+
+		me.PostRootId,
+		me.PostParentId,
+		me.PostOriginalId,
+		cleanComplianceStrings(me.PostMessage),
+		me.PostType,
+		me.PostProps,
+		me.PostHashtags,
+		me.PostFileIds,
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/config.go b/vendor/github.com/mattermost/mattermost-server/model/config.go
new file mode 100644
index 00000000..9010eaea
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/config.go
@@ -0,0 +1,2238 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+const (
+	CONN_SECURITY_NONE     = ""
+	CONN_SECURITY_PLAIN    = "PLAIN"
+	CONN_SECURITY_TLS      = "TLS"
+	CONN_SECURITY_STARTTLS = "STARTTLS"
+
+	IMAGE_DRIVER_LOCAL = "local"
+	IMAGE_DRIVER_S3    = "amazons3"
+
+	DATABASE_DRIVER_MYSQL    = "mysql"
+	DATABASE_DRIVER_POSTGRES = "postgres"
+
+	MINIO_ACCESS_KEY = "minioaccesskey"
+	MINIO_SECRET_KEY = "miniosecretkey"
+	MINIO_BUCKET     = "mattermost-test"
+
+	PASSWORD_MAXIMUM_LENGTH = 64
+	PASSWORD_MINIMUM_LENGTH = 5
+
+	SERVICE_GITLAB    = "gitlab"
+	SERVICE_GOOGLE    = "google"
+	SERVICE_OFFICE365 = "office365"
+
+	WEBSERVER_MODE_REGULAR  = "regular"
+	WEBSERVER_MODE_GZIP     = "gzip"
+	WEBSERVER_MODE_DISABLED = "disabled"
+
+	GENERIC_NO_CHANNEL_NOTIFICATION = "generic_no_channel"
+	GENERIC_NOTIFICATION            = "generic"
+	FULL_NOTIFICATION               = "full"
+
+	DIRECT_MESSAGE_ANY  = "any"
+	DIRECT_MESSAGE_TEAM = "team"
+
+	SHOW_USERNAME          = "username"
+	SHOW_NICKNAME_FULLNAME = "nickname_full_name"
+	SHOW_FULLNAME          = "full_name"
+
+	PERMISSIONS_ALL           = "all"
+	PERMISSIONS_CHANNEL_ADMIN = "channel_admin"
+	PERMISSIONS_TEAM_ADMIN    = "team_admin"
+	PERMISSIONS_SYSTEM_ADMIN  = "system_admin"
+
+	FAKE_SETTING = "********************************"
+
+	RESTRICT_EMOJI_CREATION_ALL          = "all"
+	RESTRICT_EMOJI_CREATION_ADMIN        = "admin"
+	RESTRICT_EMOJI_CREATION_SYSTEM_ADMIN = "system_admin"
+
+	PERMISSIONS_DELETE_POST_ALL          = "all"
+	PERMISSIONS_DELETE_POST_TEAM_ADMIN   = "team_admin"
+	PERMISSIONS_DELETE_POST_SYSTEM_ADMIN = "system_admin"
+
+	ALLOW_EDIT_POST_ALWAYS     = "always"
+	ALLOW_EDIT_POST_NEVER      = "never"
+	ALLOW_EDIT_POST_TIME_LIMIT = "time_limit"
+
+	GROUP_UNREAD_CHANNELS_DISABLED    = "disabled"
+	GROUP_UNREAD_CHANNELS_DEFAULT_ON  = "default_on"
+	GROUP_UNREAD_CHANNELS_DEFAULT_OFF = "default_off"
+
+	EMAIL_BATCHING_BUFFER_SIZE = 256
+	EMAIL_BATCHING_INTERVAL    = 30
+
+	EMAIL_NOTIFICATION_CONTENTS_FULL    = "full"
+	EMAIL_NOTIFICATION_CONTENTS_GENERIC = "generic"
+
+	SITENAME_MAX_LENGTH = 30
+
+	SERVICE_SETTINGS_DEFAULT_SITE_URL           = ""
+	SERVICE_SETTINGS_DEFAULT_TLS_CERT_FILE      = ""
+	SERVICE_SETTINGS_DEFAULT_TLS_KEY_FILE       = ""
+	SERVICE_SETTINGS_DEFAULT_READ_TIMEOUT       = 300
+	SERVICE_SETTINGS_DEFAULT_WRITE_TIMEOUT      = 300
+	SERVICE_SETTINGS_DEFAULT_MAX_LOGIN_ATTEMPTS = 10
+	SERVICE_SETTINGS_DEFAULT_ALLOW_CORS_FROM    = ""
+	SERVICE_SETTINGS_DEFAULT_LISTEN_AND_ADDRESS = ":8065"
+
+	TEAM_SETTINGS_DEFAULT_MAX_USERS_PER_TEAM       = 50
+	TEAM_SETTINGS_DEFAULT_CUSTOM_BRAND_TEXT        = ""
+	TEAM_SETTINGS_DEFAULT_CUSTOM_DESCRIPTION_TEXT  = ""
+	TEAM_SETTINGS_DEFAULT_USER_STATUS_AWAY_TIMEOUT = 300
+
+	SQL_SETTINGS_DEFAULT_DATA_SOURCE = "mmuser:mostest@tcp(dockerhost:3306)/mattermost_test?charset=utf8mb4,utf8&readTimeout=30s&writeTimeout=30s"
+
+	EMAIL_SETTINGS_DEFAULT_FEEDBACK_ORGANIZATION = ""
+
+	SUPPORT_SETTINGS_DEFAULT_TERMS_OF_SERVICE_LINK      = "https://about.mattermost.com/default-terms/"
+	SUPPORT_SETTINGS_DEFAULT_PRIVACY_POLICY_LINK        = "https://about.mattermost.com/default-privacy-policy/"
+	SUPPORT_SETTINGS_DEFAULT_ABOUT_LINK                 = "https://about.mattermost.com/default-about/"
+	SUPPORT_SETTINGS_DEFAULT_HELP_LINK                  = "https://about.mattermost.com/default-help/"
+	SUPPORT_SETTINGS_DEFAULT_REPORT_A_PROBLEM_LINK      = "https://about.mattermost.com/default-report-a-problem/"
+	SUPPORT_SETTINGS_DEFAULT_ADMINISTRATORS_GUIDE_LINK  = "https://about.mattermost.com/administrators-guide/"
+	SUPPORT_SETTINGS_DEFAULT_TROUBLESHOOTING_FORUM_LINK = "https://about.mattermost.com/troubleshooting-forum/"
+	SUPPORT_SETTINGS_DEFAULT_COMMERCIAL_SUPPORT_LINK    = "https://about.mattermost.com/commercial-support/"
+	SUPPORT_SETTINGS_DEFAULT_SUPPORT_EMAIL              = "feedback@mattermost.com"
+
+	LDAP_SETTINGS_DEFAULT_FIRST_NAME_ATTRIBUTE = ""
+	LDAP_SETTINGS_DEFAULT_LAST_NAME_ATTRIBUTE  = ""
+	LDAP_SETTINGS_DEFAULT_EMAIL_ATTRIBUTE      = ""
+	LDAP_SETTINGS_DEFAULT_USERNAME_ATTRIBUTE   = ""
+	LDAP_SETTINGS_DEFAULT_NICKNAME_ATTRIBUTE   = ""
+	LDAP_SETTINGS_DEFAULT_ID_ATTRIBUTE         = ""
+	LDAP_SETTINGS_DEFAULT_POSITION_ATTRIBUTE   = ""
+	LDAP_SETTINGS_DEFAULT_LOGIN_FIELD_NAME     = ""
+
+	SAML_SETTINGS_DEFAULT_FIRST_NAME_ATTRIBUTE = ""
+	SAML_SETTINGS_DEFAULT_LAST_NAME_ATTRIBUTE  = ""
+	SAML_SETTINGS_DEFAULT_EMAIL_ATTRIBUTE      = ""
+	SAML_SETTINGS_DEFAULT_USERNAME_ATTRIBUTE   = ""
+	SAML_SETTINGS_DEFAULT_NICKNAME_ATTRIBUTE   = ""
+	SAML_SETTINGS_DEFAULT_LOCALE_ATTRIBUTE     = ""
+	SAML_SETTINGS_DEFAULT_POSITION_ATTRIBUTE   = ""
+
+	NATIVEAPP_SETTINGS_DEFAULT_APP_DOWNLOAD_LINK         = "https://about.mattermost.com/downloads/"
+	NATIVEAPP_SETTINGS_DEFAULT_ANDROID_APP_DOWNLOAD_LINK = "https://about.mattermost.com/mattermost-android-app/"
+	NATIVEAPP_SETTINGS_DEFAULT_IOS_APP_DOWNLOAD_LINK     = "https://about.mattermost.com/mattermost-ios-app/"
+
+	WEBRTC_SETTINGS_DEFAULT_STUN_URI = ""
+	WEBRTC_SETTINGS_DEFAULT_TURN_URI = ""
+
+	ANALYTICS_SETTINGS_DEFAULT_MAX_USERS_FOR_STATISTICS = 2500
+
+	ANNOUNCEMENT_SETTINGS_DEFAULT_BANNER_COLOR      = "#f2a93b"
+	ANNOUNCEMENT_SETTINGS_DEFAULT_BANNER_TEXT_COLOR = "#333333"
+
+	TEAM_SETTINGS_DEFAULT_TEAM_TEXT = "default"
+
+	ELASTICSEARCH_SETTINGS_DEFAULT_CONNECTION_URL                    = ""
+	ELASTICSEARCH_SETTINGS_DEFAULT_USERNAME                          = ""
+	ELASTICSEARCH_SETTINGS_DEFAULT_PASSWORD                          = ""
+	ELASTICSEARCH_SETTINGS_DEFAULT_POST_INDEX_REPLICAS               = 1
+	ELASTICSEARCH_SETTINGS_DEFAULT_POST_INDEX_SHARDS                 = 1
+	ELASTICSEARCH_SETTINGS_DEFAULT_AGGREGATE_POSTS_AFTER_DAYS        = 365
+	ELASTICSEARCH_SETTINGS_DEFAULT_POSTS_AGGREGATOR_JOB_START_TIME   = "03:00"
+	ELASTICSEARCH_SETTINGS_DEFAULT_INDEX_PREFIX                      = ""
+	ELASTICSEARCH_SETTINGS_DEFAULT_LIVE_INDEXING_BATCH_SIZE          = 1
+	ELASTICSEARCH_SETTINGS_DEFAULT_BULK_INDEXING_TIME_WINDOW_SECONDS = 3600
+	ELASTICSEARCH_SETTINGS_DEFAULT_REQUEST_TIMEOUT_SECONDS           = 30
+
+	DATA_RETENTION_SETTINGS_DEFAULT_MESSAGE_RETENTION_DAYS  = 365
+	DATA_RETENTION_SETTINGS_DEFAULT_FILE_RETENTION_DAYS     = 365
+	DATA_RETENTION_SETTINGS_DEFAULT_DELETION_JOB_START_TIME = "02:00"
+
+	PLUGIN_SETTINGS_DEFAULT_DIRECTORY        = "./plugins"
+	PLUGIN_SETTINGS_DEFAULT_CLIENT_DIRECTORY = "./client/plugins"
+
+	COMPLIANCE_EXPORT_TYPE_ACTIANCE    = "actiance"
+	COMPLIANCE_EXPORT_TYPE_GLOBALRELAY = "globalrelay"
+)
+
+type ServiceSettings struct {
+	SiteURL                                           *string
+	LicenseFileLocation                               *string
+	ListenAddress                                     *string
+	ConnectionSecurity                                *string
+	TLSCertFile                                       *string
+	TLSKeyFile                                        *string
+	UseLetsEncrypt                                    *bool
+	LetsEncryptCertificateCacheFile                   *string
+	Forward80To443                                    *bool
+	ReadTimeout                                       *int
+	WriteTimeout                                      *int
+	MaximumLoginAttempts                              *int
+	GoroutineHealthThreshold                          *int
+	GoogleDeveloperKey                                string
+	EnableOAuthServiceProvider                        bool
+	EnableIncomingWebhooks                            bool
+	EnableOutgoingWebhooks                            bool
+	EnableCommands                                    *bool
+	EnableOnlyAdminIntegrations                       *bool
+	EnablePostUsernameOverride                        bool
+	EnablePostIconOverride                            bool
+	EnableAPIv3                                       *bool
+	EnableLinkPreviews                                *bool
+	EnableTesting                                     bool
+	EnableDeveloper                                   *bool
+	EnableSecurityFixAlert                            *bool
+	EnableInsecureOutgoingConnections                 *bool
+	AllowedUntrustedInternalConnections               *string
+	EnableMultifactorAuthentication                   *bool
+	EnforceMultifactorAuthentication                  *bool
+	EnableUserAccessTokens                            *bool
+	AllowCorsFrom                                     *string
+	SessionLengthWebInDays                            *int
+	SessionLengthMobileInDays                         *int
+	SessionLengthSSOInDays                            *int
+	SessionCacheInMinutes                             *int
+	SessionIdleTimeoutInMinutes                       *int
+	WebsocketSecurePort                               *int
+	WebsocketPort                                     *int
+	WebserverMode                                     *string
+	EnableCustomEmoji                                 *bool
+	EnableEmojiPicker                                 *bool
+	RestrictCustomEmojiCreation                       *string
+	RestrictPostDelete                                *string
+	AllowEditPost                                     *string
+	PostEditTimeLimit                                 *int
+	TimeBetweenUserTypingUpdatesMilliseconds          *int64
+	EnablePostSearch                                  *bool
+	EnableUserTypingMessages                          *bool
+	EnableChannelViewedMessages                       *bool
+	EnableUserStatuses                                *bool
+	ExperimentalEnableAuthenticationTransfer          *bool
+	ClusterLogTimeoutMilliseconds                     *int
+	CloseUnusedDirectMessages                         *bool
+	EnablePreviewFeatures                             *bool
+	EnableTutorial                                    *bool
+	ExperimentalEnableDefaultChannelLeaveJoinMessages *bool
+	ExperimentalGroupUnreadChannels                   *string
+	ImageProxyType                                    *string
+	ImageProxyURL                                     *string
+	ImageProxyOptions                                 *string
+}
+
+func (s *ServiceSettings) SetDefaults() {
+	if s.SiteURL == nil {
+		s.SiteURL = NewString(SERVICE_SETTINGS_DEFAULT_SITE_URL)
+	}
+
+	if s.LicenseFileLocation == nil {
+		s.LicenseFileLocation = NewString("")
+	}
+
+	if s.ListenAddress == nil {
+		s.ListenAddress = NewString(SERVICE_SETTINGS_DEFAULT_LISTEN_AND_ADDRESS)
+	}
+
+	if s.EnableAPIv3 == nil {
+		s.EnableAPIv3 = NewBool(true)
+	}
+
+	if s.EnableLinkPreviews == nil {
+		s.EnableLinkPreviews = NewBool(false)
+	}
+
+	if s.EnableDeveloper == nil {
+		s.EnableDeveloper = NewBool(false)
+	}
+
+	if s.EnableSecurityFixAlert == nil {
+		s.EnableSecurityFixAlert = NewBool(true)
+	}
+
+	if s.EnableInsecureOutgoingConnections == nil {
+		s.EnableInsecureOutgoingConnections = NewBool(false)
+	}
+
+	if s.AllowedUntrustedInternalConnections == nil {
+		s.AllowedUntrustedInternalConnections = NewString("")
+	}
+
+	if s.EnableMultifactorAuthentication == nil {
+		s.EnableMultifactorAuthentication = NewBool(false)
+	}
+
+	if s.EnforceMultifactorAuthentication == nil {
+		s.EnforceMultifactorAuthentication = NewBool(false)
+	}
+
+	if s.EnableUserAccessTokens == nil {
+		s.EnableUserAccessTokens = NewBool(false)
+	}
+
+	if s.GoroutineHealthThreshold == nil {
+		s.GoroutineHealthThreshold = NewInt(-1)
+	}
+
+	if s.ConnectionSecurity == nil {
+		s.ConnectionSecurity = NewString("")
+	}
+
+	if s.TLSKeyFile == nil {
+		s.TLSKeyFile = NewString(SERVICE_SETTINGS_DEFAULT_TLS_KEY_FILE)
+	}
+
+	if s.TLSCertFile == nil {
+		s.TLSCertFile = NewString(SERVICE_SETTINGS_DEFAULT_TLS_CERT_FILE)
+	}
+
+	if s.UseLetsEncrypt == nil {
+		s.UseLetsEncrypt = NewBool(false)
+	}
+
+	if s.LetsEncryptCertificateCacheFile == nil {
+		s.LetsEncryptCertificateCacheFile = NewString("./config/letsencrypt.cache")
+	}
+
+	if s.ReadTimeout == nil {
+		s.ReadTimeout = NewInt(SERVICE_SETTINGS_DEFAULT_READ_TIMEOUT)
+	}
+
+	if s.WriteTimeout == nil {
+		s.WriteTimeout = NewInt(SERVICE_SETTINGS_DEFAULT_WRITE_TIMEOUT)
+	}
+
+	if s.MaximumLoginAttempts == nil {
+		s.MaximumLoginAttempts = NewInt(SERVICE_SETTINGS_DEFAULT_MAX_LOGIN_ATTEMPTS)
+	}
+
+	if s.Forward80To443 == nil {
+		s.Forward80To443 = NewBool(false)
+	}
+
+	if s.TimeBetweenUserTypingUpdatesMilliseconds == nil {
+		s.TimeBetweenUserTypingUpdatesMilliseconds = NewInt64(5000)
+	}
+
+	if s.EnablePostSearch == nil {
+		s.EnablePostSearch = NewBool(true)
+	}
+
+	if s.EnableUserTypingMessages == nil {
+		s.EnableUserTypingMessages = NewBool(true)
+	}
+
+	if s.EnableChannelViewedMessages == nil {
+		s.EnableChannelViewedMessages = NewBool(true)
+	}
+
+	if s.EnableUserStatuses == nil {
+		s.EnableUserStatuses = NewBool(true)
+	}
+
+	if s.ClusterLogTimeoutMilliseconds == nil {
+		s.ClusterLogTimeoutMilliseconds = NewInt(2000)
+	}
+
+	if s.CloseUnusedDirectMessages == nil {
+		s.CloseUnusedDirectMessages = NewBool(false)
+	}
+
+	if s.EnableTutorial == nil {
+		s.EnableTutorial = NewBool(true)
+	}
+
+	if s.SessionLengthWebInDays == nil {
+		s.SessionLengthWebInDays = NewInt(30)
+	}
+
+	if s.SessionLengthMobileInDays == nil {
+		s.SessionLengthMobileInDays = NewInt(30)
+	}
+
+	if s.SessionLengthSSOInDays == nil {
+		s.SessionLengthSSOInDays = NewInt(30)
+	}
+
+	if s.SessionCacheInMinutes == nil {
+		s.SessionCacheInMinutes = NewInt(10)
+	}
+
+	if s.SessionIdleTimeoutInMinutes == nil {
+		s.SessionIdleTimeoutInMinutes = NewInt(0)
+	}
+
+	if s.EnableCommands == nil {
+		s.EnableCommands = NewBool(false)
+	}
+
+	if s.EnableOnlyAdminIntegrations == nil {
+		s.EnableOnlyAdminIntegrations = NewBool(true)
+	}
+
+	if s.WebsocketPort == nil {
+		s.WebsocketPort = NewInt(80)
+	}
+
+	if s.WebsocketSecurePort == nil {
+		s.WebsocketSecurePort = NewInt(443)
+	}
+
+	if s.AllowCorsFrom == nil {
+		s.AllowCorsFrom = NewString(SERVICE_SETTINGS_DEFAULT_ALLOW_CORS_FROM)
+	}
+
+	if s.WebserverMode == nil {
+		s.WebserverMode = NewString("gzip")
+	} else if *s.WebserverMode == "regular" {
+		*s.WebserverMode = "gzip"
+	}
+
+	if s.EnableCustomEmoji == nil {
+		s.EnableCustomEmoji = NewBool(false)
+	}
+
+	if s.EnableEmojiPicker == nil {
+		s.EnableEmojiPicker = NewBool(true)
+	}
+
+	if s.RestrictCustomEmojiCreation == nil {
+		s.RestrictCustomEmojiCreation = NewString(RESTRICT_EMOJI_CREATION_ALL)
+	}
+
+	if s.RestrictPostDelete == nil {
+		s.RestrictPostDelete = NewString(PERMISSIONS_DELETE_POST_ALL)
+	}
+
+	if s.AllowEditPost == nil {
+		s.AllowEditPost = NewString(ALLOW_EDIT_POST_ALWAYS)
+	}
+
+	if s.ExperimentalEnableAuthenticationTransfer == nil {
+		s.ExperimentalEnableAuthenticationTransfer = NewBool(true)
+	}
+
+	if s.PostEditTimeLimit == nil {
+		s.PostEditTimeLimit = NewInt(300)
+	}
+
+	if s.EnablePreviewFeatures == nil {
+		s.EnablePreviewFeatures = NewBool(true)
+	}
+
+	if s.ExperimentalEnableDefaultChannelLeaveJoinMessages == nil {
+		s.ExperimentalEnableDefaultChannelLeaveJoinMessages = NewBool(true)
+	}
+
+	if s.ExperimentalGroupUnreadChannels == nil {
+		s.ExperimentalGroupUnreadChannels = NewString(GROUP_UNREAD_CHANNELS_DISABLED)
+	} else if *s.ExperimentalGroupUnreadChannels == "0" {
+		s.ExperimentalGroupUnreadChannels = NewString(GROUP_UNREAD_CHANNELS_DISABLED)
+	} else if *s.ExperimentalGroupUnreadChannels == "1" {
+		s.ExperimentalGroupUnreadChannels = NewString(GROUP_UNREAD_CHANNELS_DEFAULT_ON)
+	}
+
+	if s.ImageProxyType == nil {
+		s.ImageProxyType = NewString("")
+	}
+
+	if s.ImageProxyURL == nil {
+		s.ImageProxyURL = NewString("")
+	}
+
+	if s.ImageProxyOptions == nil {
+		s.ImageProxyOptions = NewString("")
+	}
+}
+
+type ClusterSettings struct {
+	Enable                *bool
+	ClusterName           *string
+	OverrideHostname      *string
+	UseIpAddress          *bool
+	UseExperimentalGossip *bool
+	ReadOnlyConfig        *bool
+	GossipPort            *int
+	StreamingPort         *int
+}
+
+func (s *ClusterSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.ClusterName == nil {
+		s.ClusterName = NewString("")
+	}
+
+	if s.OverrideHostname == nil {
+		s.OverrideHostname = NewString("")
+	}
+
+	if s.UseIpAddress == nil {
+		s.UseIpAddress = NewBool(true)
+	}
+
+	if s.UseExperimentalGossip == nil {
+		s.UseExperimentalGossip = NewBool(false)
+	}
+
+	if s.ReadOnlyConfig == nil {
+		s.ReadOnlyConfig = NewBool(true)
+	}
+
+	if s.GossipPort == nil {
+		s.GossipPort = NewInt(8074)
+	}
+
+	if s.StreamingPort == nil {
+		s.StreamingPort = NewInt(8075)
+	}
+}
+
+type MetricsSettings struct {
+	Enable           *bool
+	BlockProfileRate *int
+	ListenAddress    *string
+}
+
+func (s *MetricsSettings) SetDefaults() {
+	if s.ListenAddress == nil {
+		s.ListenAddress = NewString(":8067")
+	}
+
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.BlockProfileRate == nil {
+		s.BlockProfileRate = NewInt(0)
+	}
+}
+
+type AnalyticsSettings struct {
+	MaxUsersForStatistics *int
+}
+
+func (s *AnalyticsSettings) SetDefaults() {
+	if s.MaxUsersForStatistics == nil {
+		s.MaxUsersForStatistics = NewInt(ANALYTICS_SETTINGS_DEFAULT_MAX_USERS_FOR_STATISTICS)
+	}
+}
+
+type SSOSettings struct {
+	Enable          bool
+	Secret          string
+	Id              string
+	Scope           string
+	AuthEndpoint    string
+	TokenEndpoint   string
+	UserApiEndpoint string
+}
+
+type SqlSettings struct {
+	DriverName               *string
+	DataSource               *string
+	DataSourceReplicas       []string
+	DataSourceSearchReplicas []string
+	MaxIdleConns             *int
+	MaxOpenConns             *int
+	Trace                    bool
+	AtRestEncryptKey         string
+	QueryTimeout             *int
+}
+
+func (s *SqlSettings) SetDefaults() {
+	if s.DriverName == nil {
+		s.DriverName = NewString(DATABASE_DRIVER_MYSQL)
+	}
+
+	if s.DataSource == nil {
+		s.DataSource = NewString(SQL_SETTINGS_DEFAULT_DATA_SOURCE)
+	}
+
+	if len(s.AtRestEncryptKey) == 0 {
+		s.AtRestEncryptKey = NewRandomString(32)
+	}
+
+	if s.MaxIdleConns == nil {
+		s.MaxIdleConns = NewInt(20)
+	}
+
+	if s.MaxOpenConns == nil {
+		s.MaxOpenConns = NewInt(300)
+	}
+
+	if s.QueryTimeout == nil {
+		s.QueryTimeout = NewInt(30)
+	}
+}
+
+type LogSettings struct {
+	EnableConsole          bool
+	ConsoleLevel           string
+	EnableFile             bool
+	FileLevel              string
+	FileFormat             string
+	FileLocation           string
+	EnableWebhookDebugging bool
+	EnableDiagnostics      *bool
+}
+
+func (s *LogSettings) SetDefaults() {
+	if s.EnableDiagnostics == nil {
+		s.EnableDiagnostics = NewBool(true)
+	}
+}
+
+type PasswordSettings struct {
+	MinimumLength *int
+	Lowercase     *bool
+	Number        *bool
+	Uppercase     *bool
+	Symbol        *bool
+}
+
+func (s *PasswordSettings) SetDefaults() {
+	if s.MinimumLength == nil {
+		s.MinimumLength = NewInt(PASSWORD_MINIMUM_LENGTH)
+	}
+
+	if s.Lowercase == nil {
+		s.Lowercase = NewBool(false)
+	}
+
+	if s.Number == nil {
+		s.Number = NewBool(false)
+	}
+
+	if s.Uppercase == nil {
+		s.Uppercase = NewBool(false)
+	}
+
+	if s.Symbol == nil {
+		s.Symbol = NewBool(false)
+	}
+}
+
+type FileSettings struct {
+	EnableFileAttachments   *bool
+	EnableMobileUpload      *bool
+	EnableMobileDownload    *bool
+	MaxFileSize             *int64
+	DriverName              *string
+	Directory               string
+	EnablePublicLink        bool
+	PublicLinkSalt          *string
+	InitialFont             string
+	AmazonS3AccessKeyId     string
+	AmazonS3SecretAccessKey string
+	AmazonS3Bucket          string
+	AmazonS3Region          string
+	AmazonS3Endpoint        string
+	AmazonS3SSL             *bool
+	AmazonS3SignV2          *bool
+	AmazonS3SSE             *bool
+	AmazonS3Trace           *bool
+}
+
+func (s *FileSettings) SetDefaults() {
+	if s.DriverName == nil {
+		s.DriverName = NewString(IMAGE_DRIVER_LOCAL)
+	}
+
+	if s.AmazonS3Endpoint == "" {
+		// Defaults to "s3.amazonaws.com"
+		s.AmazonS3Endpoint = "s3.amazonaws.com"
+	}
+
+	if s.AmazonS3SSL == nil {
+		s.AmazonS3SSL = NewBool(true) // Secure by default.
+	}
+
+	if s.AmazonS3SignV2 == nil {
+		s.AmazonS3SignV2 = new(bool)
+		// Signature v2 is not enabled by default.
+	}
+
+	if s.AmazonS3SSE == nil {
+		s.AmazonS3SSE = NewBool(false) // Not Encrypted by default.
+	}
+
+	if s.AmazonS3Trace == nil {
+		s.AmazonS3Trace = NewBool(false)
+	}
+
+	if s.EnableFileAttachments == nil {
+		s.EnableFileAttachments = NewBool(true)
+	}
+
+	if s.EnableMobileUpload == nil {
+		s.EnableMobileUpload = NewBool(true)
+	}
+
+	if s.EnableMobileDownload == nil {
+		s.EnableMobileDownload = NewBool(true)
+	}
+
+	if s.MaxFileSize == nil {
+		s.MaxFileSize = NewInt64(52428800) // 50 MB
+	}
+
+	if s.PublicLinkSalt == nil || len(*s.PublicLinkSalt) == 0 {
+		s.PublicLinkSalt = NewString(NewRandomString(32))
+	}
+
+	if s.InitialFont == "" {
+		// Defaults to "luximbi.ttf"
+		s.InitialFont = "luximbi.ttf"
+	}
+
+	if s.Directory == "" {
+		s.Directory = "./data/"
+	}
+}
+
+type EmailSettings struct {
+	EnableSignUpWithEmail             bool
+	EnableSignInWithEmail             *bool
+	EnableSignInWithUsername          *bool
+	SendEmailNotifications            bool
+	UseChannelInEmailNotifications    *bool
+	RequireEmailVerification          bool
+	FeedbackName                      string
+	FeedbackEmail                     string
+	FeedbackOrganization              *string
+	EnableSMTPAuth                    *bool
+	SMTPUsername                      string
+	SMTPPassword                      string
+	SMTPServer                        string
+	SMTPPort                          string
+	ConnectionSecurity                string
+	InviteSalt                        string
+	SendPushNotifications             *bool
+	PushNotificationServer            *string
+	PushNotificationContents          *string
+	EnableEmailBatching               *bool
+	EmailBatchingBufferSize           *int
+	EmailBatchingInterval             *int
+	SkipServerCertificateVerification *bool
+	EmailNotificationContentsType     *string
+	LoginButtonColor                  *string
+	LoginButtonBorderColor            *string
+	LoginButtonTextColor              *string
+}
+
+func (s *EmailSettings) SetDefaults() {
+	if len(s.InviteSalt) == 0 {
+		s.InviteSalt = NewRandomString(32)
+	}
+
+	if s.EnableSignInWithEmail == nil {
+		s.EnableSignInWithEmail = NewBool(s.EnableSignUpWithEmail)
+	}
+
+	if s.EnableSignInWithUsername == nil {
+		s.EnableSignInWithUsername = NewBool(false)
+	}
+
+	if s.UseChannelInEmailNotifications == nil {
+		s.UseChannelInEmailNotifications = NewBool(false)
+	}
+
+	if s.SendPushNotifications == nil {
+		s.SendPushNotifications = NewBool(false)
+	}
+
+	if s.PushNotificationServer == nil {
+		s.PushNotificationServer = NewString("")
+	}
+
+	if s.PushNotificationContents == nil {
+		s.PushNotificationContents = NewString(GENERIC_NOTIFICATION)
+	}
+
+	if s.FeedbackOrganization == nil {
+		s.FeedbackOrganization = NewString(EMAIL_SETTINGS_DEFAULT_FEEDBACK_ORGANIZATION)
+	}
+
+	if s.EnableEmailBatching == nil {
+		s.EnableEmailBatching = NewBool(false)
+	}
+
+	if s.EmailBatchingBufferSize == nil {
+		s.EmailBatchingBufferSize = NewInt(EMAIL_BATCHING_BUFFER_SIZE)
+	}
+
+	if s.EmailBatchingInterval == nil {
+		s.EmailBatchingInterval = NewInt(EMAIL_BATCHING_INTERVAL)
+	}
+
+	if s.EnableSMTPAuth == nil {
+		s.EnableSMTPAuth = new(bool)
+		if s.ConnectionSecurity == CONN_SECURITY_NONE {
+			*s.EnableSMTPAuth = false
+		} else {
+			*s.EnableSMTPAuth = true
+		}
+	}
+
+	if s.ConnectionSecurity == CONN_SECURITY_PLAIN {
+		s.ConnectionSecurity = CONN_SECURITY_NONE
+	}
+
+	if s.SkipServerCertificateVerification == nil {
+		s.SkipServerCertificateVerification = NewBool(false)
+	}
+
+	if s.EmailNotificationContentsType == nil {
+		s.EmailNotificationContentsType = NewString(EMAIL_NOTIFICATION_CONTENTS_FULL)
+	}
+
+	if s.LoginButtonColor == nil {
+		s.LoginButtonColor = NewString("#0000")
+	}
+
+	if s.LoginButtonBorderColor == nil {
+		s.LoginButtonBorderColor = NewString("#2389D7")
+	}
+
+	if s.LoginButtonTextColor == nil {
+		s.LoginButtonTextColor = NewString("#2389D7")
+	}
+}
+
+type RateLimitSettings struct {
+	Enable           *bool
+	PerSec           *int
+	MaxBurst         *int
+	MemoryStoreSize  *int
+	VaryByRemoteAddr *bool
+	VaryByUser       *bool
+	VaryByHeader     string
+}
+
+func (s *RateLimitSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.PerSec == nil {
+		s.PerSec = NewInt(10)
+	}
+
+	if s.MaxBurst == nil {
+		s.MaxBurst = NewInt(100)
+	}
+
+	if s.MemoryStoreSize == nil {
+		s.MemoryStoreSize = NewInt(10000)
+	}
+
+	if s.VaryByRemoteAddr == nil {
+		s.VaryByRemoteAddr = NewBool(true)
+	}
+
+	if s.VaryByUser == nil {
+		s.VaryByUser = NewBool(false)
+	}
+}
+
+type PrivacySettings struct {
+	ShowEmailAddress bool
+	ShowFullName     bool
+}
+
+type SupportSettings struct {
+	TermsOfServiceLink *string
+	PrivacyPolicyLink  *string
+	AboutLink          *string
+	HelpLink           *string
+	ReportAProblemLink *string
+	SupportEmail       *string
+}
+
+func (s *SupportSettings) SetDefaults() {
+	if !IsSafeLink(s.TermsOfServiceLink) {
+		*s.TermsOfServiceLink = SUPPORT_SETTINGS_DEFAULT_TERMS_OF_SERVICE_LINK
+	}
+
+	if s.TermsOfServiceLink == nil {
+		s.TermsOfServiceLink = NewString(SUPPORT_SETTINGS_DEFAULT_TERMS_OF_SERVICE_LINK)
+	}
+
+	if !IsSafeLink(s.PrivacyPolicyLink) {
+		*s.PrivacyPolicyLink = ""
+	}
+
+	if s.PrivacyPolicyLink == nil {
+		s.PrivacyPolicyLink = NewString(SUPPORT_SETTINGS_DEFAULT_PRIVACY_POLICY_LINK)
+	}
+
+	if !IsSafeLink(s.AboutLink) {
+		*s.AboutLink = ""
+	}
+
+	if s.AboutLink == nil {
+		s.AboutLink = NewString(SUPPORT_SETTINGS_DEFAULT_ABOUT_LINK)
+	}
+
+	if !IsSafeLink(s.HelpLink) {
+		*s.HelpLink = ""
+	}
+
+	if s.HelpLink == nil {
+		s.HelpLink = NewString(SUPPORT_SETTINGS_DEFAULT_HELP_LINK)
+	}
+
+	if !IsSafeLink(s.ReportAProblemLink) {
+		*s.ReportAProblemLink = ""
+	}
+
+	if s.ReportAProblemLink == nil {
+		s.ReportAProblemLink = NewString(SUPPORT_SETTINGS_DEFAULT_REPORT_A_PROBLEM_LINK)
+	}
+
+	if s.SupportEmail == nil {
+		s.SupportEmail = NewString(SUPPORT_SETTINGS_DEFAULT_SUPPORT_EMAIL)
+	}
+}
+
+type AnnouncementSettings struct {
+	EnableBanner         *bool
+	BannerText           *string
+	BannerColor          *string
+	BannerTextColor      *string
+	AllowBannerDismissal *bool
+}
+
+func (s *AnnouncementSettings) SetDefaults() {
+	if s.EnableBanner == nil {
+		s.EnableBanner = NewBool(false)
+	}
+
+	if s.BannerText == nil {
+		s.BannerText = NewString("")
+	}
+
+	if s.BannerColor == nil {
+		s.BannerColor = NewString(ANNOUNCEMENT_SETTINGS_DEFAULT_BANNER_COLOR)
+	}
+
+	if s.BannerTextColor == nil {
+		s.BannerTextColor = NewString(ANNOUNCEMENT_SETTINGS_DEFAULT_BANNER_TEXT_COLOR)
+	}
+
+	if s.AllowBannerDismissal == nil {
+		s.AllowBannerDismissal = NewBool(true)
+	}
+}
+
+type ThemeSettings struct {
+	EnableThemeSelection *bool
+	DefaultTheme         *string
+	AllowCustomThemes    *bool
+	AllowedThemes        []string
+}
+
+func (s *ThemeSettings) SetDefaults() {
+	if s.EnableThemeSelection == nil {
+		s.EnableThemeSelection = NewBool(true)
+	}
+
+	if s.DefaultTheme == nil {
+		s.DefaultTheme = NewString(TEAM_SETTINGS_DEFAULT_TEAM_TEXT)
+	}
+
+	if s.AllowCustomThemes == nil {
+		s.AllowCustomThemes = NewBool(true)
+	}
+
+	if s.AllowedThemes == nil {
+		s.AllowedThemes = []string{}
+	}
+}
+
+type TeamSettings struct {
+	SiteName                            string
+	MaxUsersPerTeam                     *int
+	EnableTeamCreation                  bool
+	EnableUserCreation                  bool
+	EnableOpenServer                    *bool
+	RestrictCreationToDomains           string
+	EnableCustomBrand                   *bool
+	CustomBrandText                     *string
+	CustomDescriptionText               *string
+	RestrictDirectMessage               *string
+	RestrictTeamInvite                  *string
+	RestrictPublicChannelManagement     *string
+	RestrictPrivateChannelManagement    *string
+	RestrictPublicChannelCreation       *string
+	RestrictPrivateChannelCreation      *string
+	RestrictPublicChannelDeletion       *string
+	RestrictPrivateChannelDeletion      *string
+	RestrictPrivateChannelManageMembers *string
+	EnableXToLeaveChannelsFromLHS       *bool
+	UserStatusAwayTimeout               *int64
+	MaxChannelsPerTeam                  *int64
+	MaxNotificationsPerChannel          *int64
+	EnableConfirmNotificationsToChannel *bool
+	TeammateNameDisplay                 *string
+	ExperimentalTownSquareIsReadOnly    *bool
+	ExperimentalPrimaryTeam             *string
+}
+
+func (s *TeamSettings) SetDefaults() {
+	if s.MaxUsersPerTeam == nil {
+		s.MaxUsersPerTeam = NewInt(TEAM_SETTINGS_DEFAULT_MAX_USERS_PER_TEAM)
+	}
+
+	if s.EnableCustomBrand == nil {
+		s.EnableCustomBrand = NewBool(false)
+	}
+
+	if s.CustomBrandText == nil {
+		s.CustomBrandText = NewString(TEAM_SETTINGS_DEFAULT_CUSTOM_BRAND_TEXT)
+	}
+
+	if s.CustomDescriptionText == nil {
+		s.CustomDescriptionText = NewString(TEAM_SETTINGS_DEFAULT_CUSTOM_DESCRIPTION_TEXT)
+	}
+
+	if s.EnableOpenServer == nil {
+		s.EnableOpenServer = NewBool(false)
+	}
+
+	if s.RestrictDirectMessage == nil {
+		s.RestrictDirectMessage = NewString(DIRECT_MESSAGE_ANY)
+	}
+
+	if s.RestrictTeamInvite == nil {
+		s.RestrictTeamInvite = NewString(PERMISSIONS_ALL)
+	}
+
+	if s.RestrictPublicChannelManagement == nil {
+		s.RestrictPublicChannelManagement = NewString(PERMISSIONS_ALL)
+	}
+
+	if s.RestrictPrivateChannelManagement == nil {
+		s.RestrictPrivateChannelManagement = NewString(PERMISSIONS_ALL)
+	}
+
+	if s.RestrictPublicChannelCreation == nil {
+		s.RestrictPublicChannelCreation = new(string)
+		// If this setting does not exist, assume migration from <3.6, so use management setting as default.
+		if *s.RestrictPublicChannelManagement == PERMISSIONS_CHANNEL_ADMIN {
+			*s.RestrictPublicChannelCreation = PERMISSIONS_TEAM_ADMIN
+		} else {
+			*s.RestrictPublicChannelCreation = *s.RestrictPublicChannelManagement
+		}
+	}
+
+	if s.RestrictPrivateChannelCreation == nil {
+		// If this setting does not exist, assume migration from <3.6, so use management setting as default.
+		if *s.RestrictPrivateChannelManagement == PERMISSIONS_CHANNEL_ADMIN {
+			s.RestrictPrivateChannelCreation = NewString(PERMISSIONS_TEAM_ADMIN)
+		} else {
+			s.RestrictPrivateChannelCreation = NewString(*s.RestrictPrivateChannelManagement)
+		}
+	}
+
+	if s.RestrictPublicChannelDeletion == nil {
+		// If this setting does not exist, assume migration from <3.6, so use management setting as default.
+		s.RestrictPublicChannelDeletion = NewString(*s.RestrictPublicChannelManagement)
+	}
+
+	if s.RestrictPrivateChannelDeletion == nil {
+		// If this setting does not exist, assume migration from <3.6, so use management setting as default.
+		s.RestrictPrivateChannelDeletion = NewString(*s.RestrictPrivateChannelManagement)
+	}
+
+	if s.RestrictPrivateChannelManageMembers == nil {
+		s.RestrictPrivateChannelManageMembers = NewString(PERMISSIONS_ALL)
+	}
+
+	if s.EnableXToLeaveChannelsFromLHS == nil {
+		s.EnableXToLeaveChannelsFromLHS = NewBool(false)
+	}
+
+	if s.UserStatusAwayTimeout == nil {
+		s.UserStatusAwayTimeout = NewInt64(TEAM_SETTINGS_DEFAULT_USER_STATUS_AWAY_TIMEOUT)
+	}
+
+	if s.MaxChannelsPerTeam == nil {
+		s.MaxChannelsPerTeam = NewInt64(2000)
+	}
+
+	if s.MaxNotificationsPerChannel == nil {
+		s.MaxNotificationsPerChannel = NewInt64(1000)
+	}
+
+	if s.EnableConfirmNotificationsToChannel == nil {
+		s.EnableConfirmNotificationsToChannel = NewBool(true)
+	}
+
+	if s.ExperimentalTownSquareIsReadOnly == nil {
+		s.ExperimentalTownSquareIsReadOnly = NewBool(false)
+	}
+
+	if s.ExperimentalPrimaryTeam == nil {
+		s.ExperimentalPrimaryTeam = NewString("")
+	}
+}
+
+type ClientRequirements struct {
+	AndroidLatestVersion string
+	AndroidMinVersion    string
+	DesktopLatestVersion string
+	DesktopMinVersion    string
+	IosLatestVersion     string
+	IosMinVersion        string
+}
+
+type LdapSettings struct {
+	// Basic
+	Enable             *bool
+	EnableSync         *bool
+	LdapServer         *string
+	LdapPort           *int
+	ConnectionSecurity *string
+	BaseDN             *string
+	BindUsername       *string
+	BindPassword       *string
+
+	// Filtering
+	UserFilter *string
+
+	// User Mapping
+	FirstNameAttribute *string
+	LastNameAttribute  *string
+	EmailAttribute     *string
+	UsernameAttribute  *string
+	NicknameAttribute  *string
+	IdAttribute        *string
+	PositionAttribute  *string
+
+	// Syncronization
+	SyncIntervalMinutes *int
+
+	// Advanced
+	SkipCertificateVerification *bool
+	QueryTimeout                *int
+	MaxPageSize                 *int
+
+	// Customization
+	LoginFieldName *string
+
+	LoginButtonColor       *string
+	LoginButtonBorderColor *string
+	LoginButtonTextColor   *string
+}
+
+func (s *LdapSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	// When unset should default to LDAP Enabled
+	if s.EnableSync == nil {
+		s.EnableSync = NewBool(*s.Enable)
+	}
+
+	if s.LdapServer == nil {
+		s.LdapServer = NewString("")
+	}
+
+	if s.LdapPort == nil {
+		s.LdapPort = NewInt(389)
+	}
+
+	if s.ConnectionSecurity == nil {
+		s.ConnectionSecurity = NewString("")
+	}
+
+	if s.BaseDN == nil {
+		s.BaseDN = NewString("")
+	}
+
+	if s.BindUsername == nil {
+		s.BindUsername = NewString("")
+	}
+
+	if s.BindPassword == nil {
+		s.BindPassword = NewString("")
+	}
+
+	if s.UserFilter == nil {
+		s.UserFilter = NewString("")
+	}
+
+	if s.FirstNameAttribute == nil {
+		s.FirstNameAttribute = NewString(LDAP_SETTINGS_DEFAULT_FIRST_NAME_ATTRIBUTE)
+	}
+
+	if s.LastNameAttribute == nil {
+		s.LastNameAttribute = NewString(LDAP_SETTINGS_DEFAULT_LAST_NAME_ATTRIBUTE)
+	}
+
+	if s.EmailAttribute == nil {
+		s.EmailAttribute = NewString(LDAP_SETTINGS_DEFAULT_EMAIL_ATTRIBUTE)
+	}
+
+	if s.UsernameAttribute == nil {
+		s.UsernameAttribute = NewString(LDAP_SETTINGS_DEFAULT_USERNAME_ATTRIBUTE)
+	}
+
+	if s.NicknameAttribute == nil {
+		s.NicknameAttribute = NewString(LDAP_SETTINGS_DEFAULT_NICKNAME_ATTRIBUTE)
+	}
+
+	if s.IdAttribute == nil {
+		s.IdAttribute = NewString(LDAP_SETTINGS_DEFAULT_ID_ATTRIBUTE)
+	}
+
+	if s.PositionAttribute == nil {
+		s.PositionAttribute = NewString(LDAP_SETTINGS_DEFAULT_POSITION_ATTRIBUTE)
+	}
+
+	if s.SyncIntervalMinutes == nil {
+		s.SyncIntervalMinutes = NewInt(60)
+	}
+
+	if s.SkipCertificateVerification == nil {
+		s.SkipCertificateVerification = NewBool(false)
+	}
+
+	if s.QueryTimeout == nil {
+		s.QueryTimeout = NewInt(60)
+	}
+
+	if s.MaxPageSize == nil {
+		s.MaxPageSize = NewInt(0)
+	}
+
+	if s.LoginFieldName == nil {
+		s.LoginFieldName = NewString(LDAP_SETTINGS_DEFAULT_LOGIN_FIELD_NAME)
+	}
+
+	if s.LoginButtonColor == nil {
+		s.LoginButtonColor = NewString("#0000")
+	}
+
+	if s.LoginButtonBorderColor == nil {
+		s.LoginButtonBorderColor = NewString("#2389D7")
+	}
+
+	if s.LoginButtonTextColor == nil {
+		s.LoginButtonTextColor = NewString("#2389D7")
+	}
+}
+
+type ComplianceSettings struct {
+	Enable      *bool
+	Directory   *string
+	EnableDaily *bool
+}
+
+func (s *ComplianceSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.Directory == nil {
+		s.Directory = NewString("./data/")
+	}
+
+	if s.EnableDaily == nil {
+		s.EnableDaily = NewBool(false)
+	}
+}
+
+type LocalizationSettings struct {
+	DefaultServerLocale *string
+	DefaultClientLocale *string
+	AvailableLocales    *string
+}
+
+func (s *LocalizationSettings) SetDefaults() {
+	if s.DefaultServerLocale == nil {
+		s.DefaultServerLocale = NewString(DEFAULT_LOCALE)
+	}
+
+	if s.DefaultClientLocale == nil {
+		s.DefaultClientLocale = NewString(DEFAULT_LOCALE)
+	}
+
+	if s.AvailableLocales == nil {
+		s.AvailableLocales = NewString("")
+	}
+}
+
+type SamlSettings struct {
+	// Basic
+	Enable             *bool
+	EnableSyncWithLdap *bool
+
+	Verify  *bool
+	Encrypt *bool
+
+	IdpUrl                      *string
+	IdpDescriptorUrl            *string
+	AssertionConsumerServiceURL *string
+
+	IdpCertificateFile    *string
+	PublicCertificateFile *string
+	PrivateKeyFile        *string
+
+	// User Mapping
+	FirstNameAttribute *string
+	LastNameAttribute  *string
+	EmailAttribute     *string
+	UsernameAttribute  *string
+	NicknameAttribute  *string
+	LocaleAttribute    *string
+	PositionAttribute  *string
+
+	LoginButtonText *string
+
+	LoginButtonColor       *string
+	LoginButtonBorderColor *string
+	LoginButtonTextColor   *string
+}
+
+func (s *SamlSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.EnableSyncWithLdap == nil {
+		s.EnableSyncWithLdap = NewBool(false)
+	}
+
+	if s.Verify == nil {
+		s.Verify = NewBool(true)
+	}
+
+	if s.Encrypt == nil {
+		s.Encrypt = NewBool(true)
+	}
+
+	if s.IdpUrl == nil {
+		s.IdpUrl = NewString("")
+	}
+
+	if s.IdpDescriptorUrl == nil {
+		s.IdpDescriptorUrl = NewString("")
+	}
+
+	if s.IdpCertificateFile == nil {
+		s.IdpCertificateFile = NewString("")
+	}
+
+	if s.PublicCertificateFile == nil {
+		s.PublicCertificateFile = NewString("")
+	}
+
+	if s.PrivateKeyFile == nil {
+		s.PrivateKeyFile = NewString("")
+	}
+
+	if s.AssertionConsumerServiceURL == nil {
+		s.AssertionConsumerServiceURL = NewString("")
+	}
+
+	if s.LoginButtonText == nil || *s.LoginButtonText == "" {
+		s.LoginButtonText = NewString(USER_AUTH_SERVICE_SAML_TEXT)
+	}
+
+	if s.FirstNameAttribute == nil {
+		s.FirstNameAttribute = NewString(SAML_SETTINGS_DEFAULT_FIRST_NAME_ATTRIBUTE)
+	}
+
+	if s.LastNameAttribute == nil {
+		s.LastNameAttribute = NewString(SAML_SETTINGS_DEFAULT_LAST_NAME_ATTRIBUTE)
+	}
+
+	if s.EmailAttribute == nil {
+		s.EmailAttribute = NewString(SAML_SETTINGS_DEFAULT_EMAIL_ATTRIBUTE)
+	}
+
+	if s.UsernameAttribute == nil {
+		s.UsernameAttribute = NewString(SAML_SETTINGS_DEFAULT_USERNAME_ATTRIBUTE)
+	}
+
+	if s.NicknameAttribute == nil {
+		s.NicknameAttribute = NewString(SAML_SETTINGS_DEFAULT_NICKNAME_ATTRIBUTE)
+	}
+
+	if s.PositionAttribute == nil {
+		s.PositionAttribute = NewString(SAML_SETTINGS_DEFAULT_POSITION_ATTRIBUTE)
+	}
+
+	if s.LocaleAttribute == nil {
+		s.LocaleAttribute = NewString(SAML_SETTINGS_DEFAULT_LOCALE_ATTRIBUTE)
+	}
+
+	if s.LoginButtonColor == nil {
+		s.LoginButtonColor = NewString("#34a28b")
+	}
+
+	if s.LoginButtonBorderColor == nil {
+		s.LoginButtonBorderColor = NewString("#2389D7")
+	}
+
+	if s.LoginButtonTextColor == nil {
+		s.LoginButtonTextColor = NewString("#ffffff")
+	}
+}
+
+type NativeAppSettings struct {
+	AppDownloadLink        *string
+	AndroidAppDownloadLink *string
+	IosAppDownloadLink     *string
+}
+
+func (s *NativeAppSettings) SetDefaults() {
+	if s.AppDownloadLink == nil {
+		s.AppDownloadLink = NewString(NATIVEAPP_SETTINGS_DEFAULT_APP_DOWNLOAD_LINK)
+	}
+
+	if s.AndroidAppDownloadLink == nil {
+		s.AndroidAppDownloadLink = NewString(NATIVEAPP_SETTINGS_DEFAULT_ANDROID_APP_DOWNLOAD_LINK)
+	}
+
+	if s.IosAppDownloadLink == nil {
+		s.IosAppDownloadLink = NewString(NATIVEAPP_SETTINGS_DEFAULT_IOS_APP_DOWNLOAD_LINK)
+	}
+}
+
+type WebrtcSettings struct {
+	Enable              *bool
+	GatewayWebsocketUrl *string
+	GatewayAdminUrl     *string
+	GatewayAdminSecret  *string
+	StunURI             *string
+	TurnURI             *string
+	TurnUsername        *string
+	TurnSharedKey       *string
+}
+
+func (s *WebrtcSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(false)
+	}
+
+	if s.GatewayWebsocketUrl == nil {
+		s.GatewayWebsocketUrl = NewString("")
+	}
+
+	if s.GatewayAdminUrl == nil {
+		s.GatewayAdminUrl = NewString("")
+	}
+
+	if s.GatewayAdminSecret == nil {
+		s.GatewayAdminSecret = NewString("")
+	}
+
+	if s.StunURI == nil {
+		s.StunURI = NewString(WEBRTC_SETTINGS_DEFAULT_STUN_URI)
+	}
+
+	if s.TurnURI == nil {
+		s.TurnURI = NewString(WEBRTC_SETTINGS_DEFAULT_TURN_URI)
+	}
+
+	if s.TurnUsername == nil {
+		s.TurnUsername = NewString("")
+	}
+
+	if s.TurnSharedKey == nil {
+		s.TurnSharedKey = NewString("")
+	}
+}
+
+type ElasticsearchSettings struct {
+	ConnectionUrl                 *string
+	Username                      *string
+	Password                      *string
+	EnableIndexing                *bool
+	EnableSearching               *bool
+	Sniff                         *bool
+	PostIndexReplicas             *int
+	PostIndexShards               *int
+	AggregatePostsAfterDays       *int
+	PostsAggregatorJobStartTime   *string
+	IndexPrefix                   *string
+	LiveIndexingBatchSize         *int
+	BulkIndexingTimeWindowSeconds *int
+	RequestTimeoutSeconds         *int
+}
+
+func (s *ElasticsearchSettings) SetDefaults() {
+	if s.ConnectionUrl == nil {
+		s.ConnectionUrl = NewString(ELASTICSEARCH_SETTINGS_DEFAULT_CONNECTION_URL)
+	}
+
+	if s.Username == nil {
+		s.Username = NewString(ELASTICSEARCH_SETTINGS_DEFAULT_USERNAME)
+	}
+
+	if s.Password == nil {
+		s.Password = NewString(ELASTICSEARCH_SETTINGS_DEFAULT_PASSWORD)
+	}
+
+	if s.EnableIndexing == nil {
+		s.EnableIndexing = NewBool(false)
+	}
+
+	if s.EnableSearching == nil {
+		s.EnableSearching = NewBool(false)
+	}
+
+	if s.Sniff == nil {
+		s.Sniff = NewBool(true)
+	}
+
+	if s.PostIndexReplicas == nil {
+		s.PostIndexReplicas = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_POST_INDEX_REPLICAS)
+	}
+
+	if s.PostIndexShards == nil {
+		s.PostIndexShards = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_POST_INDEX_SHARDS)
+	}
+
+	if s.AggregatePostsAfterDays == nil {
+		s.AggregatePostsAfterDays = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_AGGREGATE_POSTS_AFTER_DAYS)
+	}
+
+	if s.PostsAggregatorJobStartTime == nil {
+		s.PostsAggregatorJobStartTime = NewString(ELASTICSEARCH_SETTINGS_DEFAULT_POSTS_AGGREGATOR_JOB_START_TIME)
+	}
+
+	if s.IndexPrefix == nil {
+		s.IndexPrefix = NewString(ELASTICSEARCH_SETTINGS_DEFAULT_INDEX_PREFIX)
+	}
+
+	if s.LiveIndexingBatchSize == nil {
+		s.LiveIndexingBatchSize = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_LIVE_INDEXING_BATCH_SIZE)
+	}
+
+	if s.BulkIndexingTimeWindowSeconds == nil {
+		s.BulkIndexingTimeWindowSeconds = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_BULK_INDEXING_TIME_WINDOW_SECONDS)
+	}
+
+	if s.RequestTimeoutSeconds == nil {
+		s.RequestTimeoutSeconds = NewInt(ELASTICSEARCH_SETTINGS_DEFAULT_REQUEST_TIMEOUT_SECONDS)
+	}
+}
+
+type DataRetentionSettings struct {
+	EnableMessageDeletion *bool
+	EnableFileDeletion    *bool
+	MessageRetentionDays  *int
+	FileRetentionDays     *int
+	DeletionJobStartTime  *string
+}
+
+func (s *DataRetentionSettings) SetDefaults() {
+	if s.EnableMessageDeletion == nil {
+		s.EnableMessageDeletion = NewBool(false)
+	}
+
+	if s.EnableFileDeletion == nil {
+		s.EnableFileDeletion = NewBool(false)
+	}
+
+	if s.MessageRetentionDays == nil {
+		s.MessageRetentionDays = NewInt(DATA_RETENTION_SETTINGS_DEFAULT_MESSAGE_RETENTION_DAYS)
+	}
+
+	if s.FileRetentionDays == nil {
+		s.FileRetentionDays = NewInt(DATA_RETENTION_SETTINGS_DEFAULT_FILE_RETENTION_DAYS)
+	}
+
+	if s.DeletionJobStartTime == nil {
+		s.DeletionJobStartTime = NewString(DATA_RETENTION_SETTINGS_DEFAULT_DELETION_JOB_START_TIME)
+	}
+}
+
+type JobSettings struct {
+	RunJobs      *bool
+	RunScheduler *bool
+}
+
+func (s *JobSettings) SetDefaults() {
+	if s.RunJobs == nil {
+		s.RunJobs = NewBool(true)
+	}
+
+	if s.RunScheduler == nil {
+		s.RunScheduler = NewBool(true)
+	}
+}
+
+type PluginState struct {
+	Enable bool
+}
+
+type PluginSettings struct {
+	Enable          *bool
+	EnableUploads   *bool
+	Directory       *string
+	ClientDirectory *string
+	Plugins         map[string]interface{}
+	PluginStates    map[string]*PluginState
+}
+
+func (s *PluginSettings) SetDefaults() {
+	if s.Enable == nil {
+		s.Enable = NewBool(true)
+	}
+
+	if s.EnableUploads == nil {
+		s.EnableUploads = NewBool(false)
+	}
+
+	if s.Directory == nil {
+		s.Directory = NewString(PLUGIN_SETTINGS_DEFAULT_DIRECTORY)
+	}
+
+	if *s.Directory == "" {
+		*s.Directory = PLUGIN_SETTINGS_DEFAULT_DIRECTORY
+	}
+
+	if s.ClientDirectory == nil {
+		s.ClientDirectory = NewString(PLUGIN_SETTINGS_DEFAULT_CLIENT_DIRECTORY)
+	}
+
+	if *s.ClientDirectory == "" {
+		*s.ClientDirectory = PLUGIN_SETTINGS_DEFAULT_CLIENT_DIRECTORY
+	}
+
+	if s.Plugins == nil {
+		s.Plugins = make(map[string]interface{})
+	}
+
+	if s.PluginStates == nil {
+		s.PluginStates = make(map[string]*PluginState)
+	}
+}
+
+type MessageExportSettings struct {
+	EnableExport        *bool
+	ExportFormat        *string
+	DailyRunTime        *string
+	ExportFromTimestamp *int64
+	BatchSize           *int
+
+	// formatter-specific settings - these are only expected to be non-nil if ExportFormat is set to the associated format
+	GlobalRelayEmailAddress *string
+}
+
+func (s *MessageExportSettings) SetDefaults() {
+	if s.EnableExport == nil {
+		s.EnableExport = NewBool(false)
+	}
+
+	if s.ExportFormat == nil {
+		s.ExportFormat = NewString(COMPLIANCE_EXPORT_TYPE_ACTIANCE)
+	}
+
+	if s.DailyRunTime == nil {
+		s.DailyRunTime = NewString("01:00")
+	}
+
+	if s.ExportFromTimestamp == nil {
+		s.ExportFromTimestamp = NewInt64(0)
+	}
+
+	if s.EnableExport != nil && *s.EnableExport && *s.ExportFromTimestamp == int64(0) {
+		// when the feature is enabled via the System Console, use the current timestamp as the start time for future exports
+		s.ExportFromTimestamp = NewInt64(GetMillis())
+	} else if s.EnableExport != nil && !*s.EnableExport {
+		// when the feature is disabled, reset the timestamp so that the timestamp will be set if the feature is re-enabled
+		s.ExportFromTimestamp = NewInt64(0)
+	}
+
+	if s.BatchSize == nil {
+		s.BatchSize = NewInt(10000)
+	}
+}
+
+type ConfigFunc func() *Config
+
+type Config struct {
+	ServiceSettings       ServiceSettings
+	TeamSettings          TeamSettings
+	ClientRequirements    ClientRequirements
+	SqlSettings           SqlSettings
+	LogSettings           LogSettings
+	PasswordSettings      PasswordSettings
+	FileSettings          FileSettings
+	EmailSettings         EmailSettings
+	RateLimitSettings     RateLimitSettings
+	PrivacySettings       PrivacySettings
+	SupportSettings       SupportSettings
+	AnnouncementSettings  AnnouncementSettings
+	ThemeSettings         ThemeSettings
+	GitLabSettings        SSOSettings
+	GoogleSettings        SSOSettings
+	Office365Settings     SSOSettings
+	LdapSettings          LdapSettings
+	ComplianceSettings    ComplianceSettings
+	LocalizationSettings  LocalizationSettings
+	SamlSettings          SamlSettings
+	NativeAppSettings     NativeAppSettings
+	ClusterSettings       ClusterSettings
+	MetricsSettings       MetricsSettings
+	AnalyticsSettings     AnalyticsSettings
+	WebrtcSettings        WebrtcSettings
+	ElasticsearchSettings ElasticsearchSettings
+	DataRetentionSettings DataRetentionSettings
+	MessageExportSettings MessageExportSettings
+	JobSettings           JobSettings
+	PluginSettings        PluginSettings
+}
+
+func (o *Config) Clone() *Config {
+	var ret Config
+	if err := json.Unmarshal([]byte(o.ToJson()), &ret); err != nil {
+		panic(err)
+	}
+	return &ret
+}
+
+func (o *Config) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *Config) GetSSOService(service string) *SSOSettings {
+	switch service {
+	case SERVICE_GITLAB:
+		return &o.GitLabSettings
+	case SERVICE_GOOGLE:
+		return &o.GoogleSettings
+	case SERVICE_OFFICE365:
+		return &o.Office365Settings
+	}
+
+	return nil
+}
+
+func ConfigFromJson(data io.Reader) *Config {
+	var o *Config
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Config) SetDefaults() {
+	o.LdapSettings.SetDefaults()
+	o.SamlSettings.SetDefaults()
+
+	if o.TeamSettings.TeammateNameDisplay == nil {
+		o.TeamSettings.TeammateNameDisplay = NewString(SHOW_USERNAME)
+
+		if *o.SamlSettings.Enable || *o.LdapSettings.Enable {
+			*o.TeamSettings.TeammateNameDisplay = SHOW_FULLNAME
+		}
+	}
+
+	o.SqlSettings.SetDefaults()
+	o.FileSettings.SetDefaults()
+	o.EmailSettings.SetDefaults()
+	o.ServiceSettings.SetDefaults()
+	o.PasswordSettings.SetDefaults()
+	o.TeamSettings.SetDefaults()
+	o.MetricsSettings.SetDefaults()
+	o.SupportSettings.SetDefaults()
+	o.AnnouncementSettings.SetDefaults()
+	o.ThemeSettings.SetDefaults()
+	o.ClusterSettings.SetDefaults()
+	o.PluginSettings.SetDefaults()
+	o.AnalyticsSettings.SetDefaults()
+	o.ComplianceSettings.SetDefaults()
+	o.LocalizationSettings.SetDefaults()
+	o.ElasticsearchSettings.SetDefaults()
+	o.NativeAppSettings.SetDefaults()
+	o.DataRetentionSettings.SetDefaults()
+	o.RateLimitSettings.SetDefaults()
+	o.LogSettings.SetDefaults()
+	o.JobSettings.SetDefaults()
+	o.WebrtcSettings.SetDefaults()
+	o.MessageExportSettings.SetDefaults()
+}
+
+func (o *Config) IsValid() *AppError {
+	if len(*o.ServiceSettings.SiteURL) == 0 && *o.EmailSettings.EnableEmailBatching {
+		return NewAppError("Config.IsValid", "model.config.is_valid.site_url_email_batching.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *o.ClusterSettings.Enable && *o.EmailSettings.EnableEmailBatching {
+		return NewAppError("Config.IsValid", "model.config.is_valid.cluster_email_batching.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if err := o.TeamSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.SqlSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.FileSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.EmailSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.LdapSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.SamlSettings.isValid(); err != nil {
+		return err
+	}
+
+	if *o.PasswordSettings.MinimumLength < PASSWORD_MINIMUM_LENGTH || *o.PasswordSettings.MinimumLength > PASSWORD_MAXIMUM_LENGTH {
+		return NewAppError("Config.IsValid", "model.config.is_valid.password_length.app_error", map[string]interface{}{"MinLength": PASSWORD_MINIMUM_LENGTH, "MaxLength": PASSWORD_MAXIMUM_LENGTH}, "", http.StatusBadRequest)
+	}
+
+	if err := o.RateLimitSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.WebrtcSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.ServiceSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.ElasticsearchSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.DataRetentionSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.LocalizationSettings.isValid(); err != nil {
+		return err
+	}
+
+	if err := o.MessageExportSettings.isValid(o.FileSettings); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (ts *TeamSettings) isValid() *AppError {
+	if *ts.MaxUsersPerTeam <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.max_users.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ts.MaxChannelsPerTeam <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.max_channels.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ts.MaxNotificationsPerChannel <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.max_notify_per_channel.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(*ts.RestrictDirectMessage == DIRECT_MESSAGE_ANY || *ts.RestrictDirectMessage == DIRECT_MESSAGE_TEAM) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.restrict_direct_message.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(*ts.TeammateNameDisplay == SHOW_FULLNAME || *ts.TeammateNameDisplay == SHOW_NICKNAME_FULLNAME || *ts.TeammateNameDisplay == SHOW_USERNAME) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.teammate_name_display.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(ts.SiteName) > SITENAME_MAX_LENGTH {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sitename_length.app_error", map[string]interface{}{"MaxLength": SITENAME_MAX_LENGTH}, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (ss *SqlSettings) isValid() *AppError {
+	if len(ss.AtRestEncryptKey) < 32 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.encrypt_sql.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(*ss.DriverName == DATABASE_DRIVER_MYSQL || *ss.DriverName == DATABASE_DRIVER_POSTGRES) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sql_driver.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.MaxIdleConns <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sql_idle.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.QueryTimeout <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sql_query_timeout.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(*ss.DataSource) == 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sql_data_src.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.MaxOpenConns <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.sql_max_conn.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (fs *FileSettings) isValid() *AppError {
+	if *fs.MaxFileSize <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.max_file_size.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(*fs.DriverName == IMAGE_DRIVER_LOCAL || *fs.DriverName == IMAGE_DRIVER_S3) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.file_driver.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(*fs.PublicLinkSalt) < 32 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.file_salt.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (es *EmailSettings) isValid() *AppError {
+	if !(es.ConnectionSecurity == CONN_SECURITY_NONE || es.ConnectionSecurity == CONN_SECURITY_TLS || es.ConnectionSecurity == CONN_SECURITY_STARTTLS || es.ConnectionSecurity == CONN_SECURITY_PLAIN) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.email_security.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(es.InviteSalt) < 32 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.email_salt.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *es.EmailBatchingBufferSize <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.email_batching_buffer_size.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *es.EmailBatchingInterval < 30 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.email_batching_interval.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(*es.EmailNotificationContentsType == EMAIL_NOTIFICATION_CONTENTS_FULL || *es.EmailNotificationContentsType == EMAIL_NOTIFICATION_CONTENTS_GENERIC) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.email_notification_contents_type.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (rls *RateLimitSettings) isValid() *AppError {
+	if *rls.MemoryStoreSize <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.rate_mem.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *rls.PerSec <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.rate_sec.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *rls.MaxBurst <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.max_burst.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (ls *LdapSettings) isValid() *AppError {
+	if !(*ls.ConnectionSecurity == CONN_SECURITY_NONE || *ls.ConnectionSecurity == CONN_SECURITY_TLS || *ls.ConnectionSecurity == CONN_SECURITY_STARTTLS) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.ldap_security.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ls.SyncIntervalMinutes <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.ldap_sync_interval.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ls.MaxPageSize < 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.ldap_max_page_size.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ls.Enable {
+		if *ls.LdapServer == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.ldap_server", nil, "", http.StatusBadRequest)
+		}
+
+		if *ls.BaseDN == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.ldap_basedn", nil, "", http.StatusBadRequest)
+		}
+
+		if *ls.EmailAttribute == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.ldap_email", nil, "", http.StatusBadRequest)
+		}
+
+		if *ls.UsernameAttribute == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.ldap_username", nil, "", http.StatusBadRequest)
+		}
+
+		if *ls.IdAttribute == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.ldap_id", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+func (ss *SamlSettings) isValid() *AppError {
+	if *ss.Enable {
+		if len(*ss.IdpUrl) == 0 || !IsValidHttpUrl(*ss.IdpUrl) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_idp_url.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if len(*ss.IdpDescriptorUrl) == 0 || !IsValidHttpUrl(*ss.IdpDescriptorUrl) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_idp_descriptor_url.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if len(*ss.IdpCertificateFile) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_idp_cert.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if len(*ss.EmailAttribute) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_email_attribute.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if len(*ss.UsernameAttribute) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_username_attribute.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if *ss.Verify {
+			if len(*ss.AssertionConsumerServiceURL) == 0 || !IsValidHttpUrl(*ss.AssertionConsumerServiceURL) {
+				return NewAppError("Config.IsValid", "model.config.is_valid.saml_assertion_consumer_service_url.app_error", nil, "", http.StatusBadRequest)
+			}
+		}
+
+		if *ss.Encrypt {
+			if len(*ss.PrivateKeyFile) == 0 {
+				return NewAppError("Config.IsValid", "model.config.is_valid.saml_private_key.app_error", nil, "", http.StatusBadRequest)
+			}
+
+			if len(*ss.PublicCertificateFile) == 0 {
+				return NewAppError("Config.IsValid", "model.config.is_valid.saml_public_cert.app_error", nil, "", http.StatusBadRequest)
+			}
+		}
+
+		if len(*ss.EmailAttribute) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.saml_email_attribute.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+func (ws *WebrtcSettings) isValid() *AppError {
+	if *ws.Enable {
+		if len(*ws.GatewayWebsocketUrl) == 0 || !IsValidWebsocketUrl(*ws.GatewayWebsocketUrl) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_gateway_ws_url.app_error", nil, "", http.StatusBadRequest)
+		} else if len(*ws.GatewayAdminUrl) == 0 || !IsValidHttpUrl(*ws.GatewayAdminUrl) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_gateway_admin_url.app_error", nil, "", http.StatusBadRequest)
+		} else if len(*ws.GatewayAdminSecret) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_gateway_admin_secret.app_error", nil, "", http.StatusBadRequest)
+		} else if len(*ws.StunURI) != 0 && !IsValidTurnOrStunServer(*ws.StunURI) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_stun_uri.app_error", nil, "", http.StatusBadRequest)
+		} else if len(*ws.TurnURI) != 0 {
+			if !IsValidTurnOrStunServer(*ws.TurnURI) {
+				return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_turn_uri.app_error", nil, "", http.StatusBadRequest)
+			}
+			if len(*ws.TurnUsername) == 0 {
+				return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_turn_username.app_error", nil, "", http.StatusBadRequest)
+			} else if len(*ws.TurnSharedKey) == 0 {
+				return NewAppError("Config.IsValid", "model.config.is_valid.webrtc_turn_shared_key.app_error", nil, "", http.StatusBadRequest)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (ss *ServiceSettings) isValid() *AppError {
+	if !(*ss.ConnectionSecurity == CONN_SECURITY_NONE || *ss.ConnectionSecurity == CONN_SECURITY_TLS) {
+		return NewAppError("Config.IsValid", "model.config.is_valid.webserver_security.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.ReadTimeout <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.read_timeout.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.WriteTimeout <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.write_timeout.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.TimeBetweenUserTypingUpdatesMilliseconds < 1000 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.time_between_user_typing.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.MaximumLoginAttempts <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.login_attempts.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(*ss.SiteURL) != 0 {
+		if _, err := url.ParseRequestURI(*ss.SiteURL); err != nil {
+			return NewAppError("Config.IsValid", "model.config.is_valid.site_url.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	if len(*ss.ListenAddress) == 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.listen_address.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ss.ExperimentalGroupUnreadChannels != GROUP_UNREAD_CHANNELS_DISABLED &&
+		*ss.ExperimentalGroupUnreadChannels != GROUP_UNREAD_CHANNELS_DEFAULT_ON &&
+		*ss.ExperimentalGroupUnreadChannels != GROUP_UNREAD_CHANNELS_DEFAULT_OFF {
+		return NewAppError("Config.IsValid", "model.config.is_valid.group_unread_channels.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	switch *ss.ImageProxyType {
+	case "", "willnorris/imageproxy":
+	case "atmos/camo":
+		if *ss.ImageProxyOptions == "" {
+			return NewAppError("Config.IsValid", "model.config.is_valid.atmos_camo_image_proxy_options.app_error", nil, "", http.StatusBadRequest)
+		}
+	default:
+		return NewAppError("Config.IsValid", "model.config.is_valid.image_proxy_type.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (ess *ElasticsearchSettings) isValid() *AppError {
+	if *ess.EnableIndexing {
+		if len(*ess.ConnectionUrl) == 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.connection_url.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	if *ess.EnableSearching && !*ess.EnableIndexing {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.enable_searching.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ess.AggregatePostsAfterDays < 1 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.aggregate_posts_after_days.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if _, err := time.Parse("15:04", *ess.PostsAggregatorJobStartTime); err != nil {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.posts_aggregator_job_start_time.app_error", nil, err.Error(), http.StatusBadRequest)
+	}
+
+	if *ess.LiveIndexingBatchSize < 1 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.live_indexing_batch_size.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ess.BulkIndexingTimeWindowSeconds < 1 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.bulk_indexing_time_window_seconds.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *ess.RequestTimeoutSeconds < 1 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.elastic_search.request_timeout_seconds.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (drs *DataRetentionSettings) isValid() *AppError {
+	if *drs.MessageRetentionDays <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.data_retention.message_retention_days_too_low.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if *drs.FileRetentionDays <= 0 {
+		return NewAppError("Config.IsValid", "model.config.is_valid.data_retention.file_retention_days_too_low.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if _, err := time.Parse("15:04", *drs.DeletionJobStartTime); err != nil {
+		return NewAppError("Config.IsValid", "model.config.is_valid.data_retention.deletion_job_start_time.app_error", nil, err.Error(), http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (ls *LocalizationSettings) isValid() *AppError {
+	if len(*ls.AvailableLocales) > 0 {
+		if !strings.Contains(*ls.AvailableLocales, *ls.DefaultClientLocale) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.localization.available_locales.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+func (mes *MessageExportSettings) isValid(fs FileSettings) *AppError {
+	if mes.EnableExport == nil {
+		return NewAppError("Config.IsValid", "model.config.is_valid.message_export.enable.app_error", nil, "", http.StatusBadRequest)
+	}
+	if *mes.EnableExport {
+		if mes.ExportFromTimestamp == nil || *mes.ExportFromTimestamp < 0 || *mes.ExportFromTimestamp > GetMillis() {
+			return NewAppError("Config.IsValid", "model.config.is_valid.message_export.export_from.app_error", nil, "", http.StatusBadRequest)
+		} else if mes.DailyRunTime == nil {
+			return NewAppError("Config.IsValid", "model.config.is_valid.message_export.daily_runtime.app_error", nil, "", http.StatusBadRequest)
+		} else if _, err := time.Parse("15:04", *mes.DailyRunTime); err != nil {
+			return NewAppError("Config.IsValid", "model.config.is_valid.message_export.daily_runtime.app_error", nil, err.Error(), http.StatusBadRequest)
+		} else if mes.BatchSize == nil || *mes.BatchSize < 0 {
+			return NewAppError("Config.IsValid", "model.config.is_valid.message_export.batch_size.app_error", nil, "", http.StatusBadRequest)
+		} else if mes.ExportFormat == nil || (*mes.ExportFormat != COMPLIANCE_EXPORT_TYPE_ACTIANCE && *mes.ExportFormat != COMPLIANCE_EXPORT_TYPE_GLOBALRELAY) {
+			return NewAppError("Config.IsValid", "model.config.is_valid.message_export.export_type.app_error", nil, "", http.StatusBadRequest)
+		}
+
+		if *mes.ExportFormat == COMPLIANCE_EXPORT_TYPE_GLOBALRELAY {
+			// validating email addresses is hard - just make sure it contains an '@' sign
+			// see https://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address
+			if mes.GlobalRelayEmailAddress == nil || !strings.Contains(*mes.GlobalRelayEmailAddress, "@") {
+				return NewAppError("Config.IsValid", "model.config.is_valid.message_export.global_relay_email_address.app_error", nil, "", http.StatusBadRequest)
+			}
+		}
+	}
+	return nil
+}
+
+func (o *Config) GetSanitizeOptions() map[string]bool {
+	options := map[string]bool{}
+	options["fullname"] = o.PrivacySettings.ShowFullName
+	options["email"] = o.PrivacySettings.ShowEmailAddress
+
+	return options
+}
+
+func (o *Config) Sanitize() {
+	if o.LdapSettings.BindPassword != nil && len(*o.LdapSettings.BindPassword) > 0 {
+		*o.LdapSettings.BindPassword = FAKE_SETTING
+	}
+
+	*o.FileSettings.PublicLinkSalt = FAKE_SETTING
+	if len(o.FileSettings.AmazonS3SecretAccessKey) > 0 {
+		o.FileSettings.AmazonS3SecretAccessKey = FAKE_SETTING
+	}
+
+	o.EmailSettings.InviteSalt = FAKE_SETTING
+	if len(o.EmailSettings.SMTPPassword) > 0 {
+		o.EmailSettings.SMTPPassword = FAKE_SETTING
+	}
+
+	if len(o.GitLabSettings.Secret) > 0 {
+		o.GitLabSettings.Secret = FAKE_SETTING
+	}
+
+	*o.SqlSettings.DataSource = FAKE_SETTING
+	o.SqlSettings.AtRestEncryptKey = FAKE_SETTING
+
+	for i := range o.SqlSettings.DataSourceReplicas {
+		o.SqlSettings.DataSourceReplicas[i] = FAKE_SETTING
+	}
+
+	for i := range o.SqlSettings.DataSourceSearchReplicas {
+		o.SqlSettings.DataSourceSearchReplicas[i] = FAKE_SETTING
+	}
+
+	*o.ElasticsearchSettings.Password = FAKE_SETTING
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/data_retention_policy.go b/vendor/github.com/mattermost/mattermost-server/model/data_retention_policy.go
new file mode 100644
index 00000000..dbb13374
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/data_retention_policy.go
@@ -0,0 +1,27 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type DataRetentionPolicy struct {
+	MessageDeletionEnabled bool  `json:"message_deletion_enabled"`
+	FileDeletionEnabled    bool  `json:"file_deletion_enabled"`
+	MessageRetentionCutoff int64 `json:"message_retention_cutoff"`
+	FileRetentionCutoff    int64 `json:"file_retention_cutoff"`
+}
+
+func (me *DataRetentionPolicy) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func DataRetentionPolicyFromJson(data io.Reader) *DataRetentionPolicy {
+	var me *DataRetentionPolicy
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/emoji.go b/vendor/github.com/mattermost/mattermost-server/model/emoji.go
new file mode 100644
index 00000000..a1703abb
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/emoji.go
@@ -0,0 +1,83 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+const (
+	EMOJI_NAME_MAX_LENGTH = 64
+	EMOJI_SORT_BY_NAME    = "name"
+)
+
+type Emoji struct {
+	Id        string `json:"id"`
+	CreateAt  int64  `json:"create_at"`
+	UpdateAt  int64  `json:"update_at"`
+	DeleteAt  int64  `json:"delete_at"`
+	CreatorId string `json:"creator_id"`
+	Name      string `json:"name"`
+}
+
+func (emoji *Emoji) IsValid() *AppError {
+	if len(emoji.Id) != 26 {
+		return NewAppError("Emoji.IsValid", "model.emoji.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if emoji.CreateAt == 0 {
+		return NewAppError("Emoji.IsValid", "model.emoji.create_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
+	}
+
+	if emoji.UpdateAt == 0 {
+		return NewAppError("Emoji.IsValid", "model.emoji.update_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
+	}
+
+	if len(emoji.CreatorId) != 26 {
+		return NewAppError("Emoji.IsValid", "model.emoji.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(emoji.Name) == 0 || len(emoji.Name) > EMOJI_NAME_MAX_LENGTH || !IsValidAlphaNumHyphenUnderscore(emoji.Name, false) {
+		return NewAppError("Emoji.IsValid", "model.emoji.name.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (emoji *Emoji) PreSave() {
+	if emoji.Id == "" {
+		emoji.Id = NewId()
+	}
+
+	emoji.CreateAt = GetMillis()
+	emoji.UpdateAt = emoji.CreateAt
+}
+
+func (emoji *Emoji) PreUpdate() {
+	emoji.UpdateAt = GetMillis()
+}
+
+func (emoji *Emoji) ToJson() string {
+	b, _ := json.Marshal(emoji)
+	return string(b)
+}
+
+func EmojiFromJson(data io.Reader) *Emoji {
+	var emoji *Emoji
+	json.NewDecoder(data).Decode(&emoji)
+	return emoji
+}
+
+func EmojiListToJson(emojiList []*Emoji) string {
+	b, _ := json.Marshal(emojiList)
+	return string(b)
+}
+
+func EmojiListFromJson(data io.Reader) []*Emoji {
+	var emojiList []*Emoji
+	json.NewDecoder(data).Decode(&emojiList)
+	return emojiList
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/emoji_search.go b/vendor/github.com/mattermost/mattermost-server/model/emoji_search.go
new file mode 100644
index 00000000..3a768a57
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/emoji_search.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2018-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type EmojiSearch struct {
+	Term       string `json:"term"`
+	PrefixOnly bool   `json:"prefix_only"`
+}
+
+func (es *EmojiSearch) ToJson() string {
+	b, _ := json.Marshal(es)
+	return string(b)
+}
+
+func EmojiSearchFromJson(data io.Reader) *EmojiSearch {
+	var es *EmojiSearch
+	json.NewDecoder(data).Decode(&es)
+	return es
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/file.go b/vendor/github.com/mattermost/mattermost-server/model/file.go
new file mode 100644
index 00000000..c7ffbf0b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/file.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	MaxImageSize = 6048 * 4032 // 24 megapixels, roughly 36MB as a raw image
+)
+
+var (
+	IMAGE_EXTENSIONS = [5]string{".jpg", ".jpeg", ".gif", ".bmp", ".png"}
+	IMAGE_MIME_TYPES = map[string]string{".jpg": "image/jpeg", ".jpeg": "image/jpeg", ".gif": "image/gif", ".bmp": "image/bmp", ".png": "image/png", ".tiff": "image/tiff"}
+)
+
+type FileUploadResponse struct {
+	FileInfos []*FileInfo `json:"file_infos"`
+	ClientIds []string    `json:"client_ids"`
+}
+
+func FileUploadResponseFromJson(data io.Reader) *FileUploadResponse {
+	var o *FileUploadResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *FileUploadResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/file_info.go b/vendor/github.com/mattermost/mattermost-server/model/file_info.go
new file mode 100644
index 00000000..e0bbfcfc
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/file_info.go
@@ -0,0 +1,170 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"bytes"
+	"encoding/json"
+	"image"
+	"image/gif"
+	"io"
+	"mime"
+	"net/http"
+	"path/filepath"
+	"strings"
+)
+
+type FileInfo struct {
+	Id              string `json:"id"`
+	CreatorId       string `json:"user_id"`
+	PostId          string `json:"post_id,omitempty"`
+	CreateAt        int64  `json:"create_at"`
+	UpdateAt        int64  `json:"update_at"`
+	DeleteAt        int64  `json:"delete_at"`
+	Path            string `json:"-"` // not sent back to the client
+	ThumbnailPath   string `json:"-"` // not sent back to the client
+	PreviewPath     string `json:"-"` // not sent back to the client
+	Name            string `json:"name"`
+	Extension       string `json:"extension"`
+	Size            int64  `json:"size"`
+	MimeType        string `json:"mime_type"`
+	Width           int    `json:"width,omitempty"`
+	Height          int    `json:"height,omitempty"`
+	HasPreviewImage bool   `json:"has_preview_image,omitempty"`
+}
+
+func (info *FileInfo) ToJson() string {
+	b, _ := json.Marshal(info)
+	return string(b)
+}
+
+func FileInfoFromJson(data io.Reader) *FileInfo {
+	decoder := json.NewDecoder(data)
+
+	var info FileInfo
+	if err := decoder.Decode(&info); err != nil {
+		return nil
+	} else {
+		return &info
+	}
+}
+
+func FileInfosToJson(infos []*FileInfo) string {
+	b, _ := json.Marshal(infos)
+	return string(b)
+}
+
+func FileInfosFromJson(data io.Reader) []*FileInfo {
+	decoder := json.NewDecoder(data)
+
+	var infos []*FileInfo
+	if err := decoder.Decode(&infos); err != nil {
+		return nil
+	} else {
+		return infos
+	}
+}
+
+func (o *FileInfo) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	if o.CreateAt == 0 {
+		o.CreateAt = GetMillis()
+	}
+
+	if o.UpdateAt < o.CreateAt {
+		o.UpdateAt = o.CreateAt
+	}
+}
+
+func (o *FileInfo) IsValid() *AppError {
+	if len(o.Id) != 26 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.CreatorId) != 26 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.user_id.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.PostId) != 0 && len(o.PostId) != 26 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.post_id.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.Path == "" {
+		return NewAppError("FileInfo.IsValid", "model.file_info.is_valid.path.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *FileInfo) IsImage() bool {
+	return strings.HasPrefix(o.MimeType, "image")
+}
+
+func GetInfoForBytes(name string, data []byte) (*FileInfo, *AppError) {
+	info := &FileInfo{
+		Name: name,
+		Size: int64(len(data)),
+	}
+	var err *AppError
+
+	extension := strings.ToLower(filepath.Ext(name))
+	info.MimeType = mime.TypeByExtension(extension)
+
+	if extension != "" && extension[0] == '.' {
+		// The client expects a file extension without the leading period
+		info.Extension = extension[1:]
+	} else {
+		info.Extension = extension
+	}
+
+	if info.IsImage() {
+		// Only set the width and height if it's actually an image that we can understand
+		if config, _, err := image.DecodeConfig(bytes.NewReader(data)); err == nil {
+			info.Width = config.Width
+			info.Height = config.Height
+
+			if info.MimeType == "image/gif" {
+				// Just show the gif itself instead of a preview image for animated gifs
+				if gifConfig, err := gif.DecodeAll(bytes.NewReader(data)); err != nil {
+					// Still return the rest of the info even though it doesn't appear to be an actual gif
+					info.HasPreviewImage = true
+					err = NewAppError("GetInfoForBytes", "model.file_info.get.gif.app_error", nil, "name="+name, http.StatusBadRequest)
+				} else {
+					info.HasPreviewImage = len(gifConfig.Image) == 1
+				}
+			} else {
+				info.HasPreviewImage = true
+			}
+		}
+	}
+
+	return info, err
+}
+
+func GetEtagForFileInfos(infos []*FileInfo) string {
+	if len(infos) == 0 {
+		return Etag()
+	}
+
+	var maxUpdateAt int64
+
+	for _, info := range infos {
+		if info.UpdateAt > maxUpdateAt {
+			maxUpdateAt = info.UpdateAt
+		}
+	}
+
+	return Etag(infos[0].PostId, maxUpdateAt)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/gitlab.go b/vendor/github.com/mattermost/mattermost-server/model/gitlab.go
new file mode 100644
index 00000000..8777614c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/gitlab.go
@@ -0,0 +1,8 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+const (
+	USER_AUTH_SERVICE_GITLAB = "gitlab"
+)
diff --git a/vendor/github.com/mattermost/mattermost-server/model/gitlab/gitlab.go b/vendor/github.com/mattermost/mattermost-server/model/gitlab/gitlab.go
new file mode 100644
index 00000000..7e0cb10a
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/gitlab/gitlab.go
@@ -0,0 +1,114 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package oauthgitlab
+
+import (
+	"encoding/json"
+	"io"
+	"strconv"
+	"strings"
+
+	"github.com/mattermost/mattermost-server/einterfaces"
+	"github.com/mattermost/mattermost-server/model"
+)
+
+type GitLabProvider struct {
+}
+
+type GitLabUser struct {
+	Id       int64  `json:"id"`
+	Username string `json:"username"`
+	Login    string `json:"login"`
+	Email    string `json:"email"`
+	Name     string `json:"name"`
+}
+
+func init() {
+	provider := &GitLabProvider{}
+	einterfaces.RegisterOauthProvider(model.USER_AUTH_SERVICE_GITLAB, provider)
+}
+
+func userFromGitLabUser(glu *GitLabUser) *model.User {
+	user := &model.User{}
+	username := glu.Username
+	if username == "" {
+		username = glu.Login
+	}
+	user.Username = model.CleanUsername(username)
+	splitName := strings.Split(glu.Name, " ")
+	if len(splitName) == 2 {
+		user.FirstName = splitName[0]
+		user.LastName = splitName[1]
+	} else if len(splitName) >= 2 {
+		user.FirstName = splitName[0]
+		user.LastName = strings.Join(splitName[1:], " ")
+	} else {
+		user.FirstName = glu.Name
+	}
+	user.Email = glu.Email
+	userId := strconv.FormatInt(glu.Id, 10)
+	user.AuthData = &userId
+	user.AuthService = model.USER_AUTH_SERVICE_GITLAB
+
+	return user
+}
+
+func gitLabUserFromJson(data io.Reader) *GitLabUser {
+	decoder := json.NewDecoder(data)
+	var glu GitLabUser
+	err := decoder.Decode(&glu)
+	if err == nil {
+		return &glu
+	} else {
+		return nil
+	}
+}
+
+func (glu *GitLabUser) ToJson() string {
+	b, err := json.Marshal(glu)
+	if err != nil {
+		return ""
+	} else {
+		return string(b)
+	}
+}
+
+func (glu *GitLabUser) IsValid() bool {
+	if glu.Id == 0 {
+		return false
+	}
+
+	if len(glu.Email) == 0 {
+		return false
+	}
+
+	return true
+}
+
+func (glu *GitLabUser) getAuthData() string {
+	return strconv.FormatInt(glu.Id, 10)
+}
+
+func (m *GitLabProvider) GetIdentifier() string {
+	return model.USER_AUTH_SERVICE_GITLAB
+}
+
+func (m *GitLabProvider) GetUserFromJson(data io.Reader) *model.User {
+	glu := gitLabUserFromJson(data)
+	if glu.IsValid() {
+		return userFromGitLabUser(glu)
+	}
+
+	return &model.User{}
+}
+
+func (m *GitLabProvider) GetAuthDataFromJson(data io.Reader) string {
+	glu := gitLabUserFromJson(data)
+
+	if glu.IsValid() {
+		return glu.getAuthData()
+	}
+
+	return ""
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/incoming_webhook.go b/vendor/github.com/mattermost/mattermost-server/model/incoming_webhook.go
new file mode 100644
index 00000000..b38cfeec
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/incoming_webhook.go
@@ -0,0 +1,206 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"regexp"
+)
+
+const (
+	DEFAULT_WEBHOOK_USERNAME = "webhook"
+)
+
+type IncomingWebhook struct {
+	Id          string `json:"id"`
+	CreateAt    int64  `json:"create_at"`
+	UpdateAt    int64  `json:"update_at"`
+	DeleteAt    int64  `json:"delete_at"`
+	UserId      string `json:"user_id"`
+	ChannelId   string `json:"channel_id"`
+	TeamId      string `json:"team_id"`
+	DisplayName string `json:"display_name"`
+	Description string `json:"description"`
+	Username    string `json:"username"`
+	IconURL     string `json:"icon_url"`
+}
+
+type IncomingWebhookRequest struct {
+	Text        string             `json:"text"`
+	Username    string             `json:"username"`
+	IconURL     string             `json:"icon_url"`
+	ChannelName string             `json:"channel"`
+	Props       StringInterface    `json:"props"`
+	Attachments []*SlackAttachment `json:"attachments"`
+	Type        string             `json:"type"`
+}
+
+func (o *IncomingWebhook) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func IncomingWebhookFromJson(data io.Reader) *IncomingWebhook {
+	var o *IncomingWebhook
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func IncomingWebhookListToJson(l []*IncomingWebhook) string {
+	b, _ := json.Marshal(l)
+	return string(b)
+}
+
+func IncomingWebhookListFromJson(data io.Reader) []*IncomingWebhook {
+	var o []*IncomingWebhook
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *IncomingWebhook) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.id.app_error", nil, "", http.StatusBadRequest)
+
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.UserId) != 26 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ChannelId) != 26 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.channel_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.TeamId) != 26 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.team_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.DisplayName) > 64 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.display_name.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Description) > 128 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.description.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Username) > 64 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.username.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.IconURL) > 1024 {
+		return NewAppError("IncomingWebhook.IsValid", "model.incoming_hook.icon_url.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *IncomingWebhook) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	o.CreateAt = GetMillis()
+	o.UpdateAt = o.CreateAt
+}
+
+func (o *IncomingWebhook) PreUpdate() {
+	o.UpdateAt = GetMillis()
+}
+
+// escapeControlCharsFromPayload escapes control chars (\n, \t) from a byte slice.
+// Context:
+// JSON strings are not supposed to contain control characters such as \n, \t,
+// ... but some incoming webhooks might still send invalid JSON and we want to
+// try to handle that. An example invalid JSON string from an incoming webhook
+// might look like this (strings for both "text" and "fallback" attributes are
+// invalid JSON strings because they contain unescaped newlines and tabs):
+//  `{
+//    "text": "this is a test
+//						 that contains a newline and tabs",
+//    "attachments": [
+//      {
+//        "fallback": "Required plain-text summary of the attachment
+//										that contains a newline and tabs",
+//        "color": "#36a64f",
+//  			...
+//        "text": "Optional text that appears within the attachment
+//								 that contains a newline and tabs",
+//  			...
+//        "thumb_url": "http://example.com/path/to/thumb.png"
+//      }
+//    ]
+//  }`
+// This function will search for `"key": "value"` pairs, and escape \n, \t
+// from the value.
+func escapeControlCharsFromPayload(by []byte) []byte {
+	// we'll search for `"text": "..."` or `"fallback": "..."`, ...
+	keys := "text|fallback|pretext|author_name|title|value"
+
+	// the regexp reads like this:
+	// (?s): this flag let . match \n (default is false)
+	// "(keys)": we search for the keys defined above
+	// \s*:\s*: followed by 0..n spaces/tabs, a colon then 0..n spaces/tabs
+	// ": a double-quote
+	// (\\"|[^"])*: any number of times the `\"` string or any char but a double-quote
+	// ": a double-quote
+	r := `(?s)"(` + keys + `)"\s*:\s*"(\\"|[^"])*"`
+	re := regexp.MustCompile(r)
+
+	// the function that will escape \n and \t on the regexp matches
+	repl := func(b []byte) []byte {
+		if bytes.Contains(b, []byte("\n")) {
+			b = bytes.Replace(b, []byte("\n"), []byte("\\n"), -1)
+		}
+		if bytes.Contains(b, []byte("\t")) {
+			b = bytes.Replace(b, []byte("\t"), []byte("\\t"), -1)
+		}
+
+		return b
+	}
+
+	return re.ReplaceAllFunc(by, repl)
+}
+
+func decodeIncomingWebhookRequest(by []byte) (*IncomingWebhookRequest, error) {
+	decoder := json.NewDecoder(bytes.NewReader(by))
+	var o IncomingWebhookRequest
+	err := decoder.Decode(&o)
+	if err == nil {
+		return &o, nil
+	} else {
+		return nil, err
+	}
+}
+
+func IncomingWebhookRequestFromJson(data io.Reader) (*IncomingWebhookRequest, *AppError) {
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(data)
+	by := buf.Bytes()
+
+	// Try to decode the JSON data. Only if it fails, try to escape control
+	// characters from the strings contained in the JSON data.
+	o, err := decodeIncomingWebhookRequest(by)
+	if err != nil {
+		o, err = decodeIncomingWebhookRequest(escapeControlCharsFromPayload(by))
+		if err != nil {
+			return nil, NewAppError("IncomingWebhookRequestFromJson", "Unable to parse incoming data", nil, err.Error(), http.StatusBadRequest)
+		}
+	}
+
+	o.Attachments = StringifySlackFieldValue(o.Attachments)
+
+	return o, nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/initial_load.go b/vendor/github.com/mattermost/mattermost-server/model/initial_load.go
new file mode 100644
index 00000000..3be68044
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/initial_load.go
@@ -0,0 +1,30 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type InitialLoad struct {
+	User        *User             `json:"user"`
+	TeamMembers []*TeamMember     `json:"team_members"`
+	Teams       []*Team           `json:"teams"`
+	Preferences Preferences       `json:"preferences"`
+	ClientCfg   map[string]string `json:"client_cfg"`
+	LicenseCfg  map[string]string `json:"license_cfg"`
+	NoAccounts  bool              `json:"no_accounts"`
+}
+
+func (me *InitialLoad) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func InitialLoadFromJson(data io.Reader) *InitialLoad {
+	var o *InitialLoad
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/job.go b/vendor/github.com/mattermost/mattermost-server/model/job.go
new file mode 100644
index 00000000..e10ed1f5
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/job.go
@@ -0,0 +1,118 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"time"
+)
+
+const (
+	JOB_TYPE_DATA_RETENTION                 = "data_retention"
+	JOB_TYPE_MESSAGE_EXPORT                 = "message_export"
+	JOB_TYPE_ELASTICSEARCH_POST_INDEXING    = "elasticsearch_post_indexing"
+	JOB_TYPE_ELASTICSEARCH_POST_AGGREGATION = "elasticsearch_post_aggregation"
+	JOB_TYPE_LDAP_SYNC                      = "ldap_sync"
+
+	JOB_STATUS_PENDING          = "pending"
+	JOB_STATUS_IN_PROGRESS      = "in_progress"
+	JOB_STATUS_SUCCESS          = "success"
+	JOB_STATUS_ERROR            = "error"
+	JOB_STATUS_CANCEL_REQUESTED = "cancel_requested"
+	JOB_STATUS_CANCELED         = "canceled"
+)
+
+type Job struct {
+	Id             string            `json:"id"`
+	Type           string            `json:"type"`
+	Priority       int64             `json:"priority"`
+	CreateAt       int64             `json:"create_at"`
+	StartAt        int64             `json:"start_at"`
+	LastActivityAt int64             `json:"last_activity_at"`
+	Status         string            `json:"status"`
+	Progress       int64             `json:"progress"`
+	Data           map[string]string `json:"data"`
+}
+
+func (j *Job) IsValid() *AppError {
+	if len(j.Id) != 26 {
+		return NewAppError("Job.IsValid", "model.job.is_valid.id.app_error", nil, "id="+j.Id, http.StatusBadRequest)
+	}
+
+	if j.CreateAt == 0 {
+		return NewAppError("Job.IsValid", "model.job.is_valid.create_at.app_error", nil, "id="+j.Id, http.StatusBadRequest)
+	}
+
+	switch j.Type {
+	case JOB_TYPE_DATA_RETENTION:
+	case JOB_TYPE_ELASTICSEARCH_POST_INDEXING:
+	case JOB_TYPE_ELASTICSEARCH_POST_AGGREGATION:
+	case JOB_TYPE_LDAP_SYNC:
+	case JOB_TYPE_MESSAGE_EXPORT:
+	default:
+		return NewAppError("Job.IsValid", "model.job.is_valid.type.app_error", nil, "id="+j.Id, http.StatusBadRequest)
+	}
+
+	switch j.Status {
+	case JOB_STATUS_PENDING:
+	case JOB_STATUS_IN_PROGRESS:
+	case JOB_STATUS_SUCCESS:
+	case JOB_STATUS_ERROR:
+	case JOB_STATUS_CANCEL_REQUESTED:
+	case JOB_STATUS_CANCELED:
+	default:
+		return NewAppError("Job.IsValid", "model.job.is_valid.status.app_error", nil, "id="+j.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (js *Job) ToJson() string {
+	b, _ := json.Marshal(js)
+	return string(b)
+}
+
+func JobFromJson(data io.Reader) *Job {
+	var job Job
+	if err := json.NewDecoder(data).Decode(&job); err == nil {
+		return &job
+	} else {
+		return nil
+	}
+}
+
+func JobsToJson(jobs []*Job) string {
+	b, _ := json.Marshal(jobs)
+	return string(b)
+}
+
+func JobsFromJson(data io.Reader) []*Job {
+	var jobs []*Job
+	if err := json.NewDecoder(data).Decode(&jobs); err == nil {
+		return jobs
+	} else {
+		return nil
+	}
+}
+
+func (js *Job) DataToJson() string {
+	b, _ := json.Marshal(js.Data)
+	return string(b)
+}
+
+type Worker interface {
+	Run()
+	Stop()
+	JobChannel() chan<- Job
+}
+
+type Scheduler interface {
+	Name() string
+	JobType() string
+	Enabled(cfg *Config) bool
+	NextScheduleTime(cfg *Config, now time.Time, pendingJobs bool, lastSuccessfulJob *Job) *time.Time
+	ScheduleJob(cfg *Config, pendingJobs bool, lastSuccessfulJob *Job) (*Job, *AppError)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/ldap.go b/vendor/github.com/mattermost/mattermost-server/model/ldap.go
new file mode 100644
index 00000000..1453a4ad
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/ldap.go
@@ -0,0 +1,9 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+const (
+	USER_AUTH_SERVICE_LDAP = "ldap"
+	LDAP_SYNC_TASK_NAME    = "LDAP Syncronization"
+)
diff --git a/vendor/github.com/mattermost/mattermost-server/model/license.go b/vendor/github.com/mattermost/mattermost-server/model/license.go
new file mode 100644
index 00000000..942a18d5
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/license.go
@@ -0,0 +1,219 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+const (
+	EXPIRED_LICENSE_ERROR = "api.license.add_license.expired.app_error"
+	INVALID_LICENSE_ERROR = "api.license.add_license.invalid.app_error"
+)
+
+type LicenseRecord struct {
+	Id       string `json:"id"`
+	CreateAt int64  `json:"create_at"`
+	Bytes    string `json:"-"`
+}
+
+type License struct {
+	Id        string    `json:"id"`
+	IssuedAt  int64     `json:"issued_at"`
+	StartsAt  int64     `json:"starts_at"`
+	ExpiresAt int64     `json:"expires_at"`
+	Customer  *Customer `json:"customer"`
+	Features  *Features `json:"features"`
+}
+
+type Customer struct {
+	Id          string `json:"id"`
+	Name        string `json:"name"`
+	Email       string `json:"email"`
+	Company     string `json:"company"`
+	PhoneNumber string `json:"phone_number"`
+}
+
+type Features struct {
+	Users                     *int  `json:"users"`
+	LDAP                      *bool `json:"ldap"`
+	MFA                       *bool `json:"mfa"`
+	GoogleOAuth               *bool `json:"google_oauth"`
+	Office365OAuth            *bool `json:"office365_oauth"`
+	Compliance                *bool `json:"compliance"`
+	Cluster                   *bool `json:"cluster"`
+	Metrics                   *bool `json:"metrics"`
+	CustomBrand               *bool `json:"custom_brand"`
+	MHPNS                     *bool `json:"mhpns"`
+	SAML                      *bool `json:"saml"`
+	PasswordRequirements      *bool `json:"password_requirements"`
+	Elasticsearch             *bool `json:"elastic_search"`
+	Announcement              *bool `json:"announcement"`
+	ThemeManagement           *bool `json:"theme_management"`
+	EmailNotificationContents *bool `json:"email_notification_contents"`
+	DataRetention             *bool `json:"data_retention"`
+	MessageExport             *bool `json:"message_export"`
+
+	// after we enabled more features for webrtc we'll need to control them with this
+	FutureFeatures *bool `json:"future_features"`
+}
+
+func (f *Features) ToMap() map[string]interface{} {
+	return map[string]interface{}{
+		"ldap":                        *f.LDAP,
+		"mfa":                         *f.MFA,
+		"google":                      *f.GoogleOAuth,
+		"office365":                   *f.Office365OAuth,
+		"compliance":                  *f.Compliance,
+		"cluster":                     *f.Cluster,
+		"metrics":                     *f.Metrics,
+		"custom_brand":                *f.CustomBrand,
+		"mhpns":                       *f.MHPNS,
+		"saml":                        *f.SAML,
+		"password":                    *f.PasswordRequirements,
+		"elastic_search":              *f.Elasticsearch,
+		"email_notification_contents": *f.EmailNotificationContents,
+		"data_retention":              *f.DataRetention,
+		"message_export":              *f.MessageExport,
+		"future":                      *f.FutureFeatures,
+	}
+}
+
+func (f *Features) SetDefaults() {
+	if f.FutureFeatures == nil {
+		f.FutureFeatures = NewBool(true)
+	}
+
+	if f.Users == nil {
+		f.Users = NewInt(0)
+	}
+
+	if f.LDAP == nil {
+		f.LDAP = NewBool(*f.FutureFeatures)
+	}
+
+	if f.MFA == nil {
+		f.MFA = NewBool(*f.FutureFeatures)
+	}
+
+	if f.GoogleOAuth == nil {
+		f.GoogleOAuth = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Office365OAuth == nil {
+		f.Office365OAuth = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Compliance == nil {
+		f.Compliance = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Cluster == nil {
+		f.Cluster = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Metrics == nil {
+		f.Metrics = NewBool(*f.FutureFeatures)
+	}
+
+	if f.CustomBrand == nil {
+		f.CustomBrand = NewBool(*f.FutureFeatures)
+	}
+
+	if f.MHPNS == nil {
+		f.MHPNS = NewBool(*f.FutureFeatures)
+	}
+
+	if f.SAML == nil {
+		f.SAML = NewBool(*f.FutureFeatures)
+	}
+
+	if f.PasswordRequirements == nil {
+		f.PasswordRequirements = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Elasticsearch == nil {
+		f.Elasticsearch = NewBool(*f.FutureFeatures)
+	}
+
+	if f.Announcement == nil {
+		f.Announcement = NewBool(true)
+	}
+
+	if f.ThemeManagement == nil {
+		f.ThemeManagement = NewBool(true)
+	}
+
+	if f.EmailNotificationContents == nil {
+		f.EmailNotificationContents = NewBool(*f.FutureFeatures)
+	}
+
+	if f.DataRetention == nil {
+		f.DataRetention = NewBool(*f.FutureFeatures)
+	}
+
+	if f.MessageExport == nil {
+		f.MessageExport = NewBool(*f.FutureFeatures)
+	}
+}
+
+func (l *License) IsExpired() bool {
+	return l.ExpiresAt < GetMillis()
+}
+
+func (l *License) IsStarted() bool {
+	return l.StartsAt < GetMillis()
+}
+
+func (l *License) ToJson() string {
+	b, _ := json.Marshal(l)
+	return string(b)
+}
+
+// NewTestLicense returns a license that expires in the future and has the given features.
+func NewTestLicense(features ...string) *License {
+	ret := &License{
+		ExpiresAt: GetMillis() + 90*24*60*60*1000,
+		Customer:  &Customer{},
+		Features:  &Features{},
+	}
+	ret.Features.SetDefaults()
+
+	featureMap := map[string]bool{}
+	for _, feature := range features {
+		featureMap[feature] = true
+	}
+	featureJson, _ := json.Marshal(featureMap)
+	json.Unmarshal(featureJson, &ret.Features)
+
+	return ret
+}
+
+func LicenseFromJson(data io.Reader) *License {
+	var o *License
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (lr *LicenseRecord) IsValid() *AppError {
+	if len(lr.Id) != 26 {
+		return NewAppError("LicenseRecord.IsValid", "model.license_record.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if lr.CreateAt == 0 {
+		return NewAppError("LicenseRecord.IsValid", "model.license_record.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(lr.Bytes) == 0 || len(lr.Bytes) > 10000 {
+		return NewAppError("LicenseRecord.IsValid", "model.license_record.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (lr *LicenseRecord) PreSave() {
+	lr.CreateAt = GetMillis()
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/manifest.go b/vendor/github.com/mattermost/mattermost-server/model/manifest.go
new file mode 100644
index 00000000..5ba4854b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/manifest.go
@@ -0,0 +1,228 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"gopkg.in/yaml.v2"
+)
+
+const (
+	PLUGIN_CONFIG_TYPE_TEXT      = "text"
+	PLUGIN_CONFIG_TYPE_BOOL      = "bool"
+	PLUGIN_CONFIG_TYPE_RADIO     = "radio"
+	PLUGIN_CONFIG_TYPE_DROPDOWN  = "dropdown"
+	PLUGIN_CONFIG_TYPE_GENERATED = "generated"
+	PLUGIN_CONFIG_TYPE_USERNAME  = "username"
+)
+
+type PluginOption struct {
+	// The display name for the option.
+	DisplayName string `json:"display_name" yaml:"display_name"`
+
+	// The string value for the option.
+	Value string `json:"value" yaml:"value"`
+}
+
+type PluginSetting struct {
+	// The key that the setting will be assigned to in the configuration file.
+	Key string `json:"key" yaml:"key"`
+
+	// The display name for the setting.
+	DisplayName string `json:"display_name" yaml:"display_name"`
+
+	// The type of the setting.
+	//
+	// "bool" will result in a boolean true or false setting.
+	//
+	// "dropdown" will result in a string setting that allows the user to select from a list of
+	// pre-defined options.
+	//
+	// "generated" will result in a string setting that is set to a random, cryptographically secure
+	// string.
+	//
+	// "radio" will result in a string setting that allows the user to select from a short selection
+	// of pre-defined options.
+	//
+	// "text" will result in a string setting that can be typed in manually.
+	//
+	// "username" will result in a text setting that will autocomplete to a username.
+	Type string `json:"type" yaml:"type"`
+
+	// The help text to display to the user.
+	HelpText string `json:"help_text" yaml:"help_text"`
+
+	// The help text to display alongside the "Regenerate" button for settings of the "generated" type.
+	RegenerateHelpText string `json:"regenerate_help_text,omitempty" yaml:"regenerate_help_text,omitempty"`
+
+	// The placeholder to display for "text", "generated" and "username" types when blank.
+	Placeholder string `json:"placeholder" yaml:"placeholder"`
+
+	// The default value of the setting.
+	Default interface{} `json:"default" yaml:"default"`
+
+	// For "radio" or "dropdown" settings, this is the list of pre-defined options that the user can choose
+	// from.
+	Options []*PluginOption `json:"options,omitempty" yaml:"options,omitempty"`
+}
+
+type PluginSettingsSchema struct {
+	// Optional text to display above the settings.
+	Header string `json:"header" yaml:"header"`
+
+	// Optional text to display below the settings.
+	Footer string `json:"footer" yaml:"footer"`
+
+	// A list of setting definitions.
+	Settings []*PluginSetting `json:"settings" yaml:"settings"`
+}
+
+// The plugin manifest defines the metadata required to load and present your plugin. The manifest
+// file should be named plugin.json or plugin.yaml and placed in the top of your
+// plugin bundle.
+//
+// Example plugin.yaml:
+//
+//     id: com.mycompany.myplugin
+//     name: My Plugin
+//     description: This is my plugin. It does stuff.
+//     backend:
+//         executable: myplugin
+//     settings_schema:
+//         settings:
+//             - key: enable_extra_thing
+//               type: bool
+//               display_name: Enable Extra Thing
+//               help_text: When true, an extra thing will be enabled!
+//               default: false
+type Manifest struct {
+	// The id is a globally unique identifier that represents your plugin. Ids are limited
+	// to 190 characters. Reverse-DNS notation using a name you control is a good option.
+	// For example, "com.mycompany.myplugin".
+	Id string `json:"id" yaml:"id"`
+
+	// The name to be displayed for the plugin.
+	Name string `json:"name,omitempty" yaml:"name,omitempty"`
+
+	// A description of what your plugin is and does.
+	Description string `json:"description,omitempty" yaml:"description,omitempty"`
+
+	// A version number for your plugin. Semantic versioning is recommended: http://semver.org
+	Version string `json:"version" yaml:"version"`
+
+	// If your plugin extends the server, you'll need define backend.
+	Backend *ManifestBackend `json:"backend,omitempty" yaml:"backend,omitempty"`
+
+	// If your plugin extends the web app, you'll need to define webapp.
+	Webapp *ManifestWebapp `json:"webapp,omitempty" yaml:"webapp,omitempty"`
+
+	// To allow administrators to configure your plugin via the Mattermost system console, you can
+	// provide your settings schema.
+	SettingsSchema *PluginSettingsSchema `json:"settings_schema,omitempty" yaml:"settings_schema,omitempty"`
+}
+
+type ManifestBackend struct {
+	// The path to your executable binary. This should be relative to the root of your bundle and the
+	// location of the manifest file.
+	//
+	// On Windows, this file must have a ".exe" extension.
+	Executable string `json:"executable" yaml:"executable"`
+}
+
+type ManifestWebapp struct {
+	// The path to your webapp bundle. This should be relative to the root of your bundle and the
+	// location of the manifest file.
+	BundlePath string `json:"bundle_path" yaml:"bundle_path"`
+}
+
+func (m *Manifest) ToJson() string {
+	b, _ := json.Marshal(m)
+	return string(b)
+}
+
+func ManifestListToJson(m []*Manifest) string {
+	b, _ := json.Marshal(m)
+	return string(b)
+}
+
+func ManifestFromJson(data io.Reader) *Manifest {
+	var m *Manifest
+	json.NewDecoder(data).Decode(&m)
+	return m
+}
+
+func ManifestListFromJson(data io.Reader) []*Manifest {
+	var manifests []*Manifest
+	json.NewDecoder(data).Decode(&manifests)
+	return manifests
+}
+
+func (m *Manifest) HasClient() bool {
+	return m.Webapp != nil
+}
+
+func (m *Manifest) ClientManifest() *Manifest {
+	cm := new(Manifest)
+	*cm = *m
+	cm.Name = ""
+	cm.Description = ""
+	cm.Backend = nil
+	return cm
+}
+
+// FindManifest will find and parse the manifest in a given directory.
+//
+// In all cases other than a does-not-exist error, path is set to the path of the manifest file that was
+// found.
+//
+// Manifests are JSON or YAML files named plugin.json, plugin.yaml, or plugin.yml.
+func FindManifest(dir string) (manifest *Manifest, path string, err error) {
+	for _, name := range []string{"plugin.yml", "plugin.yaml"} {
+		path = filepath.Join(dir, name)
+		f, ferr := os.Open(path)
+		if ferr != nil {
+			if !os.IsNotExist(ferr) {
+				err = ferr
+				return
+			}
+			continue
+		}
+		b, ioerr := ioutil.ReadAll(f)
+		f.Close()
+		if ioerr != nil {
+			err = ioerr
+			return
+		}
+		var parsed Manifest
+		err = yaml.Unmarshal(b, &parsed)
+		if err != nil {
+			return
+		}
+		manifest = &parsed
+		return
+	}
+
+	path = filepath.Join(dir, "plugin.json")
+	f, ferr := os.Open(path)
+	if ferr != nil {
+		if os.IsNotExist(ferr) {
+			path = ""
+		}
+		err = ferr
+		return
+	}
+	defer f.Close()
+	var parsed Manifest
+	err = json.NewDecoder(f).Decode(&parsed)
+	if err != nil {
+		return
+	}
+	manifest = &parsed
+	return
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/message_export.go b/vendor/github.com/mattermost/mattermost-server/model/message_export.go
new file mode 100644
index 00000000..22641dee
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/message_export.go
@@ -0,0 +1,19 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+type MessageExport struct {
+	ChannelId          *string
+	ChannelDisplayName *string
+
+	UserId    *string
+	UserEmail *string
+	Username  *string
+
+	PostId       *string
+	PostCreateAt *int64
+	PostMessage  *string
+	PostType     *string
+	PostFileIds  StringArray
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/mfa_secret.go b/vendor/github.com/mattermost/mattermost-server/model/mfa_secret.go
new file mode 100644
index 00000000..23a903c8
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/mfa_secret.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type MfaSecret struct {
+	Secret string `json:"secret"`
+	QRCode string `json:"qr_code"`
+}
+
+func (me *MfaSecret) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func MfaSecretFromJson(data io.Reader) *MfaSecret {
+	var me *MfaSecret
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/oauth.go b/vendor/github.com/mattermost/mattermost-server/model/oauth.go
new file mode 100644
index 00000000..70e8a3f2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/oauth.go
@@ -0,0 +1,164 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"unicode/utf8"
+)
+
+const (
+	OAUTH_ACTION_SIGNUP       = "signup"
+	OAUTH_ACTION_LOGIN        = "login"
+	OAUTH_ACTION_EMAIL_TO_SSO = "email_to_sso"
+	OAUTH_ACTION_SSO_TO_EMAIL = "sso_to_email"
+	OAUTH_ACTION_MOBILE       = "mobile"
+)
+
+type OAuthApp struct {
+	Id           string      `json:"id"`
+	CreatorId    string      `json:"creator_id"`
+	CreateAt     int64       `json:"create_at"`
+	UpdateAt     int64       `json:"update_at"`
+	ClientSecret string      `json:"client_secret"`
+	Name         string      `json:"name"`
+	Description  string      `json:"description"`
+	IconURL      string      `json:"icon_url"`
+	CallbackUrls StringArray `json:"callback_urls"`
+	Homepage     string      `json:"homepage"`
+	IsTrusted    bool        `json:"is_trusted"`
+}
+
+// IsValid validates the app and returns an error if it isn't configured
+// correctly.
+func (a *OAuthApp) IsValid() *AppError {
+
+	if len(a.Id) != 26 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.app_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if a.CreateAt == 0 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.create_at.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if a.UpdateAt == 0 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.update_at.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if len(a.CreatorId) != 26 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.creator_id.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if len(a.ClientSecret) == 0 || len(a.ClientSecret) > 128 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.client_secret.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if len(a.Name) == 0 || len(a.Name) > 64 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.name.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if len(a.CallbackUrls) == 0 || len(fmt.Sprintf("%s", a.CallbackUrls)) > 1024 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.callback.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	for _, callback := range a.CallbackUrls {
+		if !IsValidHttpUrl(callback) {
+			return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.callback.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	if len(a.Homepage) == 0 || len(a.Homepage) > 256 || !IsValidHttpUrl(a.Homepage) {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.homepage.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(a.Description) > 512 {
+		return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.description.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+	}
+
+	if len(a.IconURL) > 0 {
+		if len(a.IconURL) > 512 || !IsValidHttpUrl(a.IconURL) {
+			return NewAppError("OAuthApp.IsValid", "model.oauth.is_valid.icon_url.app_error", nil, "app_id="+a.Id, http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+// PreSave will set the Id and ClientSecret if missing.  It will also fill
+// in the CreateAt, UpdateAt times. It should be run before saving the app to the db.
+func (a *OAuthApp) PreSave() {
+	if a.Id == "" {
+		a.Id = NewId()
+	}
+
+	if a.ClientSecret == "" {
+		a.ClientSecret = NewId()
+	}
+
+	a.CreateAt = GetMillis()
+	a.UpdateAt = a.CreateAt
+}
+
+// PreUpdate should be run before updating the app in the db.
+func (a *OAuthApp) PreUpdate() {
+	a.UpdateAt = GetMillis()
+}
+
+// ToJson convert a User to a json string
+func (a *OAuthApp) ToJson() string {
+	b, _ := json.Marshal(a)
+	return string(b)
+}
+
+// Generate a valid strong etag so the browser can cache the results
+func (a *OAuthApp) Etag() string {
+	return Etag(a.Id, a.UpdateAt)
+}
+
+// Remove any private data from the app object
+func (a *OAuthApp) Sanitize() {
+	a.ClientSecret = ""
+}
+
+func (a *OAuthApp) IsValidRedirectURL(url string) bool {
+	for _, u := range a.CallbackUrls {
+		if u == url {
+			return true
+		}
+	}
+
+	return false
+}
+
+// OAuthAppFromJson will decode the input and return a User
+func OAuthAppFromJson(data io.Reader) *OAuthApp {
+	var app *OAuthApp
+	json.NewDecoder(data).Decode(&app)
+	return app
+}
+
+func OAuthAppMapToJson(a map[string]*OAuthApp) string {
+	b, _ := json.Marshal(a)
+	return string(b)
+}
+
+func OAuthAppMapFromJson(data io.Reader) map[string]*OAuthApp {
+	var apps map[string]*OAuthApp
+	json.NewDecoder(data).Decode(&apps)
+	return apps
+}
+
+func OAuthAppListToJson(l []*OAuthApp) string {
+	b, _ := json.Marshal(l)
+	return string(b)
+}
+
+func OAuthAppListFromJson(data io.Reader) []*OAuthApp {
+	var o []*OAuthApp
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/outgoing_webhook.go b/vendor/github.com/mattermost/mattermost-server/model/outgoing_webhook.go
new file mode 100644
index 00000000..b5dbf34d
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/outgoing_webhook.go
@@ -0,0 +1,254 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+)
+
+type OutgoingWebhook struct {
+	Id           string      `json:"id"`
+	Token        string      `json:"token"`
+	CreateAt     int64       `json:"create_at"`
+	UpdateAt     int64       `json:"update_at"`
+	DeleteAt     int64       `json:"delete_at"`
+	CreatorId    string      `json:"creator_id"`
+	ChannelId    string      `json:"channel_id"`
+	TeamId       string      `json:"team_id"`
+	TriggerWords StringArray `json:"trigger_words"`
+	TriggerWhen  int         `json:"trigger_when"`
+	CallbackURLs StringArray `json:"callback_urls"`
+	DisplayName  string      `json:"display_name"`
+	Description  string      `json:"description"`
+	ContentType  string      `json:"content_type"`
+}
+
+type OutgoingWebhookPayload struct {
+	Token       string `json:"token"`
+	TeamId      string `json:"team_id"`
+	TeamDomain  string `json:"team_domain"`
+	ChannelId   string `json:"channel_id"`
+	ChannelName string `json:"channel_name"`
+	Timestamp   int64  `json:"timestamp"`
+	UserId      string `json:"user_id"`
+	UserName    string `json:"user_name"`
+	PostId      string `json:"post_id"`
+	Text        string `json:"text"`
+	TriggerWord string `json:"trigger_word"`
+	FileIds     string `json:"file_ids"`
+}
+
+type OutgoingWebhookResponse struct {
+	Text         *string            `json:"text"`
+	Username     string             `json:"username"`
+	IconURL      string             `json:"icon_url"`
+	Props        StringInterface    `json:"props"`
+	Attachments  []*SlackAttachment `json:"attachments"`
+	Type         string             `json:"type"`
+	ResponseType string             `json:"response_type"`
+}
+
+const OUTGOING_HOOK_RESPONSE_TYPE_COMMENT = "comment"
+
+func (o *OutgoingWebhookPayload) ToJSON() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *OutgoingWebhookPayload) ToFormValues() string {
+	v := url.Values{}
+	v.Set("token", o.Token)
+	v.Set("team_id", o.TeamId)
+	v.Set("team_domain", o.TeamDomain)
+	v.Set("channel_id", o.ChannelId)
+	v.Set("channel_name", o.ChannelName)
+	v.Set("timestamp", strconv.FormatInt(o.Timestamp/1000, 10))
+	v.Set("user_id", o.UserId)
+	v.Set("user_name", o.UserName)
+	v.Set("post_id", o.PostId)
+	v.Set("text", o.Text)
+	v.Set("trigger_word", o.TriggerWord)
+	v.Set("file_ids", o.FileIds)
+
+	return v.Encode()
+}
+
+func (o *OutgoingWebhook) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func OutgoingWebhookFromJson(data io.Reader) *OutgoingWebhook {
+	var o *OutgoingWebhook
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func OutgoingWebhookListToJson(l []*OutgoingWebhook) string {
+	b, _ := json.Marshal(l)
+	return string(b)
+}
+
+func OutgoingWebhookListFromJson(data io.Reader) []*OutgoingWebhook {
+	var o []*OutgoingWebhook
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *OutgoingWebhookResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func OutgoingWebhookResponseFromJson(data io.Reader) *OutgoingWebhookResponse {
+	var o *OutgoingWebhookResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *OutgoingWebhook) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Token) != 26 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.token.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.CreatorId) != 26 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ChannelId) != 0 && len(o.ChannelId) != 26 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.channel_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.TeamId) != 26 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.team_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(fmt.Sprintf("%s", o.TriggerWords)) > 1024 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.words.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.TriggerWords) != 0 {
+		for _, triggerWord := range o.TriggerWords {
+			if len(triggerWord) == 0 {
+				return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.trigger_words.app_error", nil, "", http.StatusBadRequest)
+			}
+		}
+	}
+
+	if len(o.CallbackURLs) == 0 || len(fmt.Sprintf("%s", o.CallbackURLs)) > 1024 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.callback.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	for _, callback := range o.CallbackURLs {
+		if !IsValidHttpUrl(callback) {
+			return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.url.app_error", nil, "", http.StatusBadRequest)
+		}
+	}
+
+	if len(o.DisplayName) > 64 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.display_name.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.Description) > 128 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.description.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ContentType) > 128 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.content_type.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.TriggerWhen > 1 {
+		return NewAppError("OutgoingWebhook.IsValid", "model.outgoing_hook.is_valid.content_type.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *OutgoingWebhook) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	if o.Token == "" {
+		o.Token = NewId()
+	}
+
+	o.CreateAt = GetMillis()
+	o.UpdateAt = o.CreateAt
+}
+
+func (o *OutgoingWebhook) PreUpdate() {
+	o.UpdateAt = GetMillis()
+}
+
+func (o *OutgoingWebhook) TriggerWordExactMatch(word string) bool {
+	if len(word) == 0 {
+		return false
+	}
+
+	for _, trigger := range o.TriggerWords {
+		if trigger == word {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (o *OutgoingWebhook) TriggerWordStartsWith(word string) bool {
+	if len(word) == 0 {
+		return false
+	}
+
+	for _, trigger := range o.TriggerWords {
+		if strings.HasPrefix(word, trigger) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (o *OutgoingWebhook) GetTriggerWord(word string, isExactMatch bool) (triggerWord string) {
+	if len(word) == 0 {
+		return
+	}
+
+	if isExactMatch {
+		for _, trigger := range o.TriggerWords {
+			if trigger == word {
+				triggerWord = trigger
+				break
+			}
+		}
+	} else {
+		for _, trigger := range o.TriggerWords {
+			if strings.HasPrefix(word, trigger) {
+				triggerWord = trigger
+				break
+			}
+		}
+	}
+
+	return triggerWord
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/plugin_key_value.go b/vendor/github.com/mattermost/mattermost-server/model/plugin_key_value.go
new file mode 100644
index 00000000..b7a7731c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/plugin_key_value.go
@@ -0,0 +1,32 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"net/http"
+	"unicode/utf8"
+)
+
+const (
+	KEY_VALUE_PLUGIN_ID_MAX_RUNES = 190
+	KEY_VALUE_KEY_MAX_RUNES       = 50
+)
+
+type PluginKeyValue struct {
+	PluginId string `json:"plugin_id"`
+	Key      string `json:"key" db:"PKey"`
+	Value    []byte `json:"value" db:"PValue"`
+}
+
+func (kv *PluginKeyValue) IsValid() *AppError {
+	if len(kv.PluginId) == 0 || utf8.RuneCountInString(kv.PluginId) > KEY_VALUE_PLUGIN_ID_MAX_RUNES {
+		return NewAppError("PluginKeyValue.IsValid", "model.plugin_key_value.is_valid.plugin_id.app_error", map[string]interface{}{"Max": KEY_VALUE_KEY_MAX_RUNES, "Min": 0}, "key="+kv.Key, http.StatusBadRequest)
+	}
+
+	if len(kv.Key) == 0 || utf8.RuneCountInString(kv.Key) > KEY_VALUE_KEY_MAX_RUNES {
+		return NewAppError("PluginKeyValue.IsValid", "model.plugin_key_value.is_valid.key.app_error", map[string]interface{}{"Max": KEY_VALUE_KEY_MAX_RUNES, "Min": 0}, "key="+kv.Key, http.StatusBadRequest)
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/plugins_response.go b/vendor/github.com/mattermost/mattermost-server/model/plugins_response.go
new file mode 100644
index 00000000..b6c01b64
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/plugins_response.go
@@ -0,0 +1,30 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type PluginInfo struct {
+	Manifest
+	Prepackaged bool `json:"prepackaged"`
+}
+
+type PluginsResponse struct {
+	Active   []*PluginInfo `json:"active"`
+	Inactive []*PluginInfo `json:"inactive"`
+}
+
+func (m *PluginsResponse) ToJson() string {
+	b, _ := json.Marshal(m)
+	return string(b)
+}
+
+func PluginsResponseFromJson(data io.Reader) *PluginsResponse {
+	var m *PluginsResponse
+	json.NewDecoder(data).Decode(&m)
+	return m
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/post.go b/vendor/github.com/mattermost/mattermost-server/model/post.go
new file mode 100644
index 00000000..4a774b5d
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/post.go
@@ -0,0 +1,492 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"regexp"
+	"sort"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/mattermost/mattermost-server/utils/markdown"
+)
+
+const (
+	POST_SYSTEM_MESSAGE_PREFIX  = "system_"
+	POST_DEFAULT                = ""
+	POST_SLACK_ATTACHMENT       = "slack_attachment"
+	POST_SYSTEM_GENERIC         = "system_generic"
+	POST_JOIN_LEAVE             = "system_join_leave" // Deprecated, use POST_JOIN_CHANNEL or POST_LEAVE_CHANNEL instead
+	POST_JOIN_CHANNEL           = "system_join_channel"
+	POST_LEAVE_CHANNEL          = "system_leave_channel"
+	POST_JOIN_TEAM              = "system_join_team"
+	POST_LEAVE_TEAM             = "system_leave_team"
+	POST_ADD_REMOVE             = "system_add_remove" // Deprecated, use POST_ADD_TO_CHANNEL or POST_REMOVE_FROM_CHANNEL instead
+	POST_ADD_TO_CHANNEL         = "system_add_to_channel"
+	POST_REMOVE_FROM_CHANNEL    = "system_remove_from_channel"
+	POST_MOVE_CHANNEL           = "system_move_channel"
+	POST_ADD_TO_TEAM            = "system_add_to_team"
+	POST_REMOVE_FROM_TEAM       = "system_remove_from_team"
+	POST_HEADER_CHANGE          = "system_header_change"
+	POST_DISPLAYNAME_CHANGE     = "system_displayname_change"
+	POST_PURPOSE_CHANGE         = "system_purpose_change"
+	POST_CHANNEL_DELETED        = "system_channel_deleted"
+	POST_EPHEMERAL              = "system_ephemeral"
+	POST_CHANGE_CHANNEL_PRIVACY = "system_change_chan_privacy"
+	POST_FILEIDS_MAX_RUNES      = 150
+	POST_FILENAMES_MAX_RUNES    = 4000
+	POST_HASHTAGS_MAX_RUNES     = 1000
+	POST_MESSAGE_MAX_RUNES      = 4000
+	POST_PROPS_MAX_RUNES        = 8000
+	POST_PROPS_MAX_USER_RUNES   = POST_PROPS_MAX_RUNES - 400 // Leave some room for system / pre-save modifications
+	POST_CUSTOM_TYPE_PREFIX     = "custom_"
+	PROPS_ADD_CHANNEL_MEMBER    = "add_channel_member"
+)
+
+type Post struct {
+	Id         string `json:"id"`
+	CreateAt   int64  `json:"create_at"`
+	UpdateAt   int64  `json:"update_at"`
+	EditAt     int64  `json:"edit_at"`
+	DeleteAt   int64  `json:"delete_at"`
+	IsPinned   bool   `json:"is_pinned"`
+	UserId     string `json:"user_id"`
+	ChannelId  string `json:"channel_id"`
+	RootId     string `json:"root_id"`
+	ParentId   string `json:"parent_id"`
+	OriginalId string `json:"original_id"`
+
+	Message string `json:"message"`
+
+	// MessageSource will contain the message as submitted by the user if Message has been modified
+	// by Mattermost for presentation (e.g if an image proxy is being used). It should be used to
+	// populate edit boxes if present.
+	MessageSource string `json:"message_source,omitempty" db:"-"`
+
+	Type          string          `json:"type"`
+	Props         StringInterface `json:"props"`
+	Hashtags      string          `json:"hashtags"`
+	Filenames     StringArray     `json:"filenames,omitempty"` // Deprecated, do not use this field any more
+	FileIds       StringArray     `json:"file_ids,omitempty"`
+	PendingPostId string          `json:"pending_post_id" db:"-"`
+	HasReactions  bool            `json:"has_reactions,omitempty"`
+}
+
+type PostPatch struct {
+	IsPinned     *bool            `json:"is_pinned"`
+	Message      *string          `json:"message"`
+	Props        *StringInterface `json:"props"`
+	FileIds      *StringArray     `json:"file_ids"`
+	HasReactions *bool            `json:"has_reactions"`
+}
+
+func (o *PostPatch) WithRewrittenImageURLs(f func(string) string) *PostPatch {
+	copy := *o
+	if copy.Message != nil {
+		*copy.Message = RewriteImageURLs(*o.Message, f)
+	}
+	return &copy
+}
+
+type PostForIndexing struct {
+	Post
+	TeamId         string `json:"team_id"`
+	ParentCreateAt *int64 `json:"parent_create_at"`
+}
+
+type PostAction struct {
+	Id          string                 `json:"id"`
+	Name        string                 `json:"name"`
+	Integration *PostActionIntegration `json:"integration,omitempty"`
+}
+
+type PostActionIntegration struct {
+	URL     string          `json:"url,omitempty"`
+	Context StringInterface `json:"context,omitempty"`
+}
+
+type PostActionIntegrationRequest struct {
+	UserId  string          `json:"user_id"`
+	Context StringInterface `json:"context,omitempty"`
+}
+
+type PostActionIntegrationResponse struct {
+	Update        *Post  `json:"update"`
+	EphemeralText string `json:"ephemeral_text"`
+}
+
+func (o *Post) ToJson() string {
+	copy := *o
+	copy.StripActionIntegrations()
+	b, _ := json.Marshal(&copy)
+	return string(b)
+}
+
+func (o *Post) ToUnsanitizedJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func PostFromJson(data io.Reader) *Post {
+	var o *Post
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Post) Etag() string {
+	return Etag(o.Id, o.UpdateAt)
+}
+
+func (o *Post) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.UserId) != 26 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ChannelId) != 26 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.channel_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(len(o.RootId) == 26 || len(o.RootId) == 0) {
+		return NewAppError("Post.IsValid", "model.post.is_valid.root_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(len(o.ParentId) == 26 || len(o.ParentId) == 0) {
+		return NewAppError("Post.IsValid", "model.post.is_valid.parent_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.ParentId) == 26 && len(o.RootId) == 0 {
+		return NewAppError("Post.IsValid", "model.post.is_valid.root_parent.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if !(len(o.OriginalId) == 26 || len(o.OriginalId) == 0) {
+		return NewAppError("Post.IsValid", "model.post.is_valid.original_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.Message) > POST_MESSAGE_MAX_RUNES {
+		return NewAppError("Post.IsValid", "model.post.is_valid.msg.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.Hashtags) > POST_HASHTAGS_MAX_RUNES {
+		return NewAppError("Post.IsValid", "model.post.is_valid.hashtags.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	switch o.Type {
+	case
+		POST_DEFAULT,
+		POST_JOIN_LEAVE,
+		POST_ADD_REMOVE,
+		POST_JOIN_CHANNEL,
+		POST_LEAVE_CHANNEL,
+		POST_JOIN_TEAM,
+		POST_LEAVE_TEAM,
+		POST_ADD_TO_CHANNEL,
+		POST_REMOVE_FROM_CHANNEL,
+		POST_MOVE_CHANNEL,
+		POST_ADD_TO_TEAM,
+		POST_REMOVE_FROM_TEAM,
+		POST_SLACK_ATTACHMENT,
+		POST_HEADER_CHANGE,
+		POST_PURPOSE_CHANGE,
+		POST_DISPLAYNAME_CHANGE,
+		POST_CHANNEL_DELETED,
+		POST_CHANGE_CHANNEL_PRIVACY:
+	default:
+		if !strings.HasPrefix(o.Type, POST_CUSTOM_TYPE_PREFIX) {
+			return NewAppError("Post.IsValid", "model.post.is_valid.type.app_error", nil, "id="+o.Type, http.StatusBadRequest)
+		}
+	}
+
+	if utf8.RuneCountInString(ArrayToJson(o.Filenames)) > POST_FILENAMES_MAX_RUNES {
+		return NewAppError("Post.IsValid", "model.post.is_valid.filenames.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(ArrayToJson(o.FileIds)) > POST_FILEIDS_MAX_RUNES {
+		return NewAppError("Post.IsValid", "model.post.is_valid.file_ids.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(StringInterfaceToJson(o.Props)) > POST_PROPS_MAX_RUNES {
+		return NewAppError("Post.IsValid", "model.post.is_valid.props.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *Post) SanitizeProps() {
+	membersToSanitize := []string{
+		PROPS_ADD_CHANNEL_MEMBER,
+	}
+
+	for _, member := range membersToSanitize {
+		if _, ok := o.Props[member]; ok {
+			delete(o.Props, member)
+		}
+	}
+}
+
+func (o *Post) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	o.OriginalId = ""
+
+	if o.CreateAt == 0 {
+		o.CreateAt = GetMillis()
+	}
+
+	o.UpdateAt = o.CreateAt
+	o.PreCommit()
+}
+
+func (o *Post) PreCommit() {
+	if o.Props == nil {
+		o.Props = make(map[string]interface{})
+	}
+
+	if o.Filenames == nil {
+		o.Filenames = []string{}
+	}
+
+	if o.FileIds == nil {
+		o.FileIds = []string{}
+	}
+
+	o.GenerateActionIds()
+}
+
+func (o *Post) MakeNonNil() {
+	if o.Props == nil {
+		o.Props = make(map[string]interface{})
+	}
+}
+
+func (o *Post) AddProp(key string, value interface{}) {
+
+	o.MakeNonNil()
+
+	o.Props[key] = value
+}
+
+func (o *Post) IsSystemMessage() bool {
+	return len(o.Type) >= len(POST_SYSTEM_MESSAGE_PREFIX) && o.Type[:len(POST_SYSTEM_MESSAGE_PREFIX)] == POST_SYSTEM_MESSAGE_PREFIX
+}
+
+func (p *Post) Patch(patch *PostPatch) {
+	if patch.IsPinned != nil {
+		p.IsPinned = *patch.IsPinned
+	}
+
+	if patch.Message != nil {
+		p.Message = *patch.Message
+	}
+
+	if patch.Props != nil {
+		p.Props = *patch.Props
+	}
+
+	if patch.FileIds != nil {
+		p.FileIds = *patch.FileIds
+	}
+
+	if patch.HasReactions != nil {
+		p.HasReactions = *patch.HasReactions
+	}
+}
+
+func (o *PostPatch) ToJson() string {
+	b, err := json.Marshal(o)
+	if err != nil {
+		return ""
+	}
+
+	return string(b)
+}
+
+func PostPatchFromJson(data io.Reader) *PostPatch {
+	decoder := json.NewDecoder(data)
+	var post PostPatch
+	err := decoder.Decode(&post)
+	if err != nil {
+		return nil
+	}
+
+	return &post
+}
+
+var channelMentionRegexp = regexp.MustCompile(`\B~[a-zA-Z0-9\-_]+`)
+
+func (o *Post) ChannelMentions() (names []string) {
+	if strings.Contains(o.Message, "~") {
+		alreadyMentioned := make(map[string]bool)
+		for _, match := range channelMentionRegexp.FindAllString(o.Message, -1) {
+			name := match[1:]
+			if !alreadyMentioned[name] {
+				names = append(names, name)
+				alreadyMentioned[name] = true
+			}
+		}
+	}
+	return
+}
+
+func (r *PostActionIntegrationRequest) ToJson() string {
+	b, _ := json.Marshal(r)
+	return string(b)
+}
+
+func (o *Post) Attachments() []*SlackAttachment {
+	if attachments, ok := o.Props["attachments"].([]*SlackAttachment); ok {
+		return attachments
+	}
+	var ret []*SlackAttachment
+	if attachments, ok := o.Props["attachments"].([]interface{}); ok {
+		for _, attachment := range attachments {
+			if enc, err := json.Marshal(attachment); err == nil {
+				var decoded SlackAttachment
+				if json.Unmarshal(enc, &decoded) == nil {
+					ret = append(ret, &decoded)
+				}
+			}
+		}
+	}
+	return ret
+}
+
+func (o *Post) StripActionIntegrations() {
+	attachments := o.Attachments()
+	if o.Props["attachments"] != nil {
+		o.Props["attachments"] = attachments
+	}
+	for _, attachment := range attachments {
+		for _, action := range attachment.Actions {
+			action.Integration = nil
+		}
+	}
+}
+
+func (o *Post) GetAction(id string) *PostAction {
+	for _, attachment := range o.Attachments() {
+		for _, action := range attachment.Actions {
+			if action.Id == id {
+				return action
+			}
+		}
+	}
+	return nil
+}
+
+func (o *Post) GenerateActionIds() {
+	if o.Props["attachments"] != nil {
+		o.Props["attachments"] = o.Attachments()
+	}
+	if attachments, ok := o.Props["attachments"].([]*SlackAttachment); ok {
+		for _, attachment := range attachments {
+			for _, action := range attachment.Actions {
+				if action.Id == "" {
+					action.Id = NewId()
+				}
+			}
+		}
+	}
+}
+
+var markdownDestinationEscaper = strings.NewReplacer(
+	`\`, `\\`,
+	`<`, `\<`,
+	`>`, `\>`,
+	`(`, `\(`,
+	`)`, `\)`,
+)
+
+// WithRewrittenImageURLs returns a new shallow copy of the post where the message has been
+// rewritten via RewriteImageURLs.
+func (o *Post) WithRewrittenImageURLs(f func(string) string) *Post {
+	copy := *o
+	copy.Message = RewriteImageURLs(o.Message, f)
+	if copy.MessageSource == "" && copy.Message != o.Message {
+		copy.MessageSource = o.Message
+	}
+	return &copy
+}
+
+// RewriteImageURLs takes a message and returns a copy that has all of the image URLs replaced
+// according to the function f. For each image URL, f will be invoked, and the resulting markdown
+// will contain the URL returned by that invocation instead.
+//
+// Image URLs are destination URLs used in inline images or reference definitions that are used
+// anywhere in the input markdown as an image.
+func RewriteImageURLs(message string, f func(string) string) string {
+	if !strings.Contains(message, "![") {
+		return message
+	}
+
+	var ranges []markdown.Range
+
+	markdown.Inspect(message, func(blockOrInline interface{}) bool {
+		switch v := blockOrInline.(type) {
+		case *markdown.ReferenceImage:
+			ranges = append(ranges, v.ReferenceDefinition.RawDestination)
+		case *markdown.InlineImage:
+			ranges = append(ranges, v.RawDestination)
+		default:
+			return true
+		}
+		return true
+	})
+
+	if ranges == nil {
+		return message
+	}
+
+	sort.Slice(ranges, func(i, j int) bool {
+		return ranges[i].Position < ranges[j].Position
+	})
+
+	copyRanges := make([]markdown.Range, 0, len(ranges))
+	urls := make([]string, 0, len(ranges))
+	resultLength := len(message)
+
+	start := 0
+	for i, r := range ranges {
+		switch {
+		case i == 0:
+		case r.Position != ranges[i-1].Position:
+			start = ranges[i-1].End
+		default:
+			continue
+		}
+		original := message[r.Position:r.End]
+		replacement := markdownDestinationEscaper.Replace(f(markdown.Unescape(original)))
+		resultLength += len(replacement) - len(original)
+		copyRanges = append(copyRanges, markdown.Range{Position: start, End: r.Position})
+		urls = append(urls, replacement)
+	}
+
+	result := make([]byte, resultLength)
+
+	offset := 0
+	for i, r := range copyRanges {
+		offset += copy(result[offset:], message[r.Position:r.End])
+		offset += copy(result[offset:], urls[i])
+	}
+	copy(result[offset:], message[ranges[len(ranges)-1].End:])
+
+	return string(result)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/post_list.go b/vendor/github.com/mattermost/mattermost-server/model/post_list.go
new file mode 100644
index 00000000..27c22e7b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/post_list.go
@@ -0,0 +1,138 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"sort"
+)
+
+type PostList struct {
+	Order []string         `json:"order"`
+	Posts map[string]*Post `json:"posts"`
+}
+
+func NewPostList() *PostList {
+	return &PostList{
+		Order: make([]string, 0),
+		Posts: make(map[string]*Post),
+	}
+}
+
+func (o *PostList) WithRewrittenImageURLs(f func(string) string) *PostList {
+	copy := *o
+	copy.Posts = make(map[string]*Post)
+	for id, post := range o.Posts {
+		copy.Posts[id] = post.WithRewrittenImageURLs(f)
+	}
+	return &copy
+}
+
+func (o *PostList) StripActionIntegrations() {
+	posts := o.Posts
+	o.Posts = make(map[string]*Post)
+	for id, post := range posts {
+		pcopy := *post
+		pcopy.StripActionIntegrations()
+		o.Posts[id] = &pcopy
+	}
+}
+
+func (o *PostList) ToJson() string {
+	copy := *o
+	copy.StripActionIntegrations()
+	b, err := json.Marshal(&copy)
+	if err != nil {
+		return ""
+	} else {
+		return string(b)
+	}
+}
+
+func (o *PostList) MakeNonNil() {
+	if o.Order == nil {
+		o.Order = make([]string, 0)
+	}
+
+	if o.Posts == nil {
+		o.Posts = make(map[string]*Post)
+	}
+
+	for _, v := range o.Posts {
+		v.MakeNonNil()
+	}
+}
+
+func (o *PostList) AddOrder(id string) {
+
+	if o.Order == nil {
+		o.Order = make([]string, 0, 128)
+	}
+
+	o.Order = append(o.Order, id)
+}
+
+func (o *PostList) AddPost(post *Post) {
+
+	if o.Posts == nil {
+		o.Posts = make(map[string]*Post)
+	}
+
+	o.Posts[post.Id] = post
+}
+
+func (o *PostList) Extend(other *PostList) {
+	for _, postId := range other.Order {
+		if _, ok := o.Posts[postId]; !ok {
+			o.AddPost(other.Posts[postId])
+			o.AddOrder(postId)
+		}
+	}
+}
+
+func (o *PostList) SortByCreateAt() {
+	sort.Slice(o.Order, func(i, j int) bool {
+		return o.Posts[o.Order[i]].CreateAt > o.Posts[o.Order[j]].CreateAt
+	})
+}
+
+func (o *PostList) Etag() string {
+
+	id := "0"
+	var t int64 = 0
+
+	for _, v := range o.Posts {
+		if v.UpdateAt > t {
+			t = v.UpdateAt
+			id = v.Id
+		} else if v.UpdateAt == t && v.Id > id {
+			t = v.UpdateAt
+			id = v.Id
+		}
+	}
+
+	orderId := ""
+	if len(o.Order) > 0 {
+		orderId = o.Order[0]
+	}
+
+	return Etag(orderId, id, t)
+}
+
+func (o *PostList) IsChannelId(channelId string) bool {
+	for _, v := range o.Posts {
+		if v.ChannelId != channelId {
+			return false
+		}
+	}
+
+	return true
+}
+
+func PostListFromJson(data io.Reader) *PostList {
+	var o *PostList
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/preference.go b/vendor/github.com/mattermost/mattermost-server/model/preference.go
new file mode 100644
index 00000000..dc97314c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/preference.go
@@ -0,0 +1,113 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+)
+
+const (
+	PREFERENCE_CATEGORY_DIRECT_CHANNEL_SHOW = "direct_channel_show"
+	PREFERENCE_CATEGORY_TUTORIAL_STEPS      = "tutorial_step"
+	PREFERENCE_CATEGORY_ADVANCED_SETTINGS   = "advanced_settings"
+	PREFERENCE_CATEGORY_FLAGGED_POST        = "flagged_post"
+	PREFERENCE_CATEGORY_FAVORITE_CHANNEL    = "favorite_channel"
+
+	PREFERENCE_CATEGORY_DISPLAY_SETTINGS = "display_settings"
+	PREFERENCE_NAME_COLLAPSE_SETTING     = "collapse_previews"
+
+	PREFERENCE_CATEGORY_THEME = "theme"
+	// the name for theme props is the team id
+
+	PREFERENCE_CATEGORY_AUTHORIZED_OAUTH_APP = "oauth_app"
+	// the name for oauth_app is the client_id and value is the current scope
+
+	PREFERENCE_CATEGORY_LAST     = "last"
+	PREFERENCE_NAME_LAST_CHANNEL = "channel"
+	PREFERENCE_NAME_LAST_TEAM    = "team"
+
+	PREFERENCE_CATEGORY_NOTIFICATIONS = "notifications"
+	PREFERENCE_NAME_EMAIL_INTERVAL    = "email_interval"
+
+	PREFERENCE_EMAIL_INTERVAL_NO_BATCHING_SECONDS = "30"  // the "immediate" setting is actually 30s
+	PREFERENCE_EMAIL_INTERVAL_BATCHING_SECONDS    = "900" // fifteen minutes is 900 seconds
+)
+
+type Preference struct {
+	UserId   string `json:"user_id"`
+	Category string `json:"category"`
+	Name     string `json:"name"`
+	Value    string `json:"value"`
+}
+
+func (o *Preference) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func PreferenceFromJson(data io.Reader) *Preference {
+	var o *Preference
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Preference) IsValid() *AppError {
+	if len(o.UserId) != 26 {
+		return NewAppError("Preference.IsValid", "model.preference.is_valid.id.app_error", nil, "user_id="+o.UserId, http.StatusBadRequest)
+	}
+
+	if len(o.Category) == 0 || len(o.Category) > 32 {
+		return NewAppError("Preference.IsValid", "model.preference.is_valid.category.app_error", nil, "category="+o.Category, http.StatusBadRequest)
+	}
+
+	if len(o.Name) > 32 {
+		return NewAppError("Preference.IsValid", "model.preference.is_valid.name.app_error", nil, "name="+o.Name, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.Value) > 2000 {
+		return NewAppError("Preference.IsValid", "model.preference.is_valid.value.app_error", nil, "value="+o.Value, http.StatusBadRequest)
+	}
+
+	if o.Category == PREFERENCE_CATEGORY_THEME {
+		var unused map[string]string
+		if err := json.NewDecoder(strings.NewReader(o.Value)).Decode(&unused); err != nil {
+			return NewAppError("Preference.IsValid", "model.preference.is_valid.theme.app_error", nil, "value="+o.Value, http.StatusBadRequest)
+		}
+	}
+
+	return nil
+}
+
+func (o *Preference) PreUpdate() {
+	if o.Category == PREFERENCE_CATEGORY_THEME {
+		// decode the value of theme (a map of strings to string) and eliminate any invalid values
+		var props map[string]string
+		if err := json.NewDecoder(strings.NewReader(o.Value)).Decode(&props); err != nil {
+			// just continue, the invalid preference value should get caught by IsValid before saving
+			return
+		}
+
+		colorPattern := regexp.MustCompile(`^#[0-9a-fA-F]{3}([0-9a-fA-F]{3})?$`)
+
+		// blank out any invalid theme values
+		for name, value := range props {
+			if name == "image" || name == "type" || name == "codeTheme" {
+				continue
+			}
+
+			if !colorPattern.MatchString(value) {
+				props[name] = "#ffffff"
+			}
+		}
+
+		if b, err := json.Marshal(props); err == nil {
+			o.Value = string(b)
+		}
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/preferences.go b/vendor/github.com/mattermost/mattermost-server/model/preferences.go
new file mode 100644
index 00000000..172e1aa8
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/preferences.go
@@ -0,0 +1,27 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type Preferences []Preference
+
+func (o *Preferences) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func PreferencesFromJson(data io.Reader) (Preferences, error) {
+	decoder := json.NewDecoder(data)
+	var o Preferences
+	err := decoder.Decode(&o)
+	if err == nil {
+		return o, nil
+	} else {
+		return nil, err
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/push_notification.go b/vendor/github.com/mattermost/mattermost-server/model/push_notification.go
new file mode 100644
index 00000000..0d7ba77a
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/push_notification.go
@@ -0,0 +1,68 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"strings"
+)
+
+const (
+	PUSH_NOTIFY_APPLE                = "apple"
+	PUSH_NOTIFY_ANDROID              = "android"
+	PUSH_NOTIFY_APPLE_REACT_NATIVE   = "apple_rn"
+	PUSH_NOTIFY_ANDROID_REACT_NATIVE = "android_rn"
+
+	PUSH_TYPE_MESSAGE = "message"
+	PUSH_TYPE_CLEAR   = "clear"
+
+	// The category is set to handle a set of interactive Actions
+	// with the push notifications
+	CATEGORY_CAN_REPLY = "CAN_REPLY"
+
+	MHPNS = "https://push.mattermost.com"
+)
+
+type PushNotification struct {
+	Platform         string `json:"platform"`
+	ServerId         string `json:"server_id"`
+	DeviceId         string `json:"device_id"`
+	Category         string `json:"category"`
+	Sound            string `json:"sound"`
+	Message          string `json:"message"`
+	Badge            int    `json:"badge"`
+	ContentAvailable int    `json:"cont_ava"`
+	TeamId           string `json:"team_id"`
+	ChannelId        string `json:"channel_id"`
+	PostId           string `json:"post_id"`
+	RootId           string `json:"root_id"`
+	ChannelName      string `json:"channel_name"`
+	Type             string `json:"type"`
+	SenderId         string `json:"sender_id"`
+	OverrideUsername string `json:"override_username"`
+	OverrideIconUrl  string `json:"override_icon_url"`
+	FromWebhook      string `json:"from_webhook"`
+}
+
+func (me *PushNotification) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func (me *PushNotification) SetDeviceIdAndPlatform(deviceId string) {
+
+	index := strings.Index(deviceId, ":")
+
+	if index > -1 {
+		me.Platform = deviceId[:index]
+		me.DeviceId = deviceId[index+1:]
+	}
+}
+
+func PushNotificationFromJson(data io.Reader) *PushNotification {
+	var me *PushNotification
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/push_response.go b/vendor/github.com/mattermost/mattermost-server/model/push_response.go
new file mode 100644
index 00000000..1434a2b1
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/push_response.go
@@ -0,0 +1,54 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	PUSH_STATUS           = "status"
+	PUSH_STATUS_OK        = "OK"
+	PUSH_STATUS_FAIL      = "FAIL"
+	PUSH_STATUS_REMOVE    = "REMOVE"
+	PUSH_STATUS_ERROR_MSG = "error"
+)
+
+type PushResponse map[string]string
+
+func NewOkPushResponse() PushResponse {
+	m := make(map[string]string)
+	m[PUSH_STATUS] = PUSH_STATUS_OK
+	return m
+}
+
+func NewRemovePushResponse() PushResponse {
+	m := make(map[string]string)
+	m[PUSH_STATUS] = PUSH_STATUS_REMOVE
+	return m
+}
+
+func NewErrorPushResponse(message string) PushResponse {
+	m := make(map[string]string)
+	m[PUSH_STATUS] = PUSH_STATUS_FAIL
+	m[PUSH_STATUS_ERROR_MSG] = message
+	return m
+}
+
+func (me *PushResponse) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func PushResponseFromJson(data io.Reader) PushResponse {
+	decoder := json.NewDecoder(data)
+
+	var objmap PushResponse
+	if err := decoder.Decode(&objmap); err != nil {
+		return make(map[string]string)
+	} else {
+		return objmap
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/reaction.go b/vendor/github.com/mattermost/mattermost-server/model/reaction.go
new file mode 100644
index 00000000..c1b9c499
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/reaction.go
@@ -0,0 +1,76 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"regexp"
+)
+
+type Reaction struct {
+	UserId    string `json:"user_id"`
+	PostId    string `json:"post_id"`
+	EmojiName string `json:"emoji_name"`
+	CreateAt  int64  `json:"create_at"`
+}
+
+func (o *Reaction) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ReactionFromJson(data io.Reader) *Reaction {
+	var o Reaction
+
+	if err := json.NewDecoder(data).Decode(&o); err != nil {
+		return nil
+	} else {
+		return &o
+	}
+}
+
+func ReactionsToJson(o []*Reaction) string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func ReactionsFromJson(data io.Reader) []*Reaction {
+	var o []*Reaction
+
+	if err := json.NewDecoder(data).Decode(&o); err != nil {
+		return nil
+	} else {
+		return o
+	}
+}
+
+func (o *Reaction) IsValid() *AppError {
+	if len(o.UserId) != 26 {
+		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.user_id.app_error", nil, "user_id="+o.UserId, http.StatusBadRequest)
+	}
+
+	if len(o.PostId) != 26 {
+		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.post_id.app_error", nil, "post_id="+o.PostId, http.StatusBadRequest)
+	}
+
+	validName := regexp.MustCompile(`^[a-zA-Z0-9\-\+_]+$`)
+
+	if len(o.EmojiName) == 0 || len(o.EmojiName) > EMOJI_NAME_MAX_LENGTH || !validName.MatchString(o.EmojiName) {
+		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.emoji_name.app_error", nil, "emoji_name="+o.EmojiName, http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("Reaction.IsValid", "model.reaction.is_valid.create_at.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *Reaction) PreSave() {
+	if o.CreateAt == 0 {
+		o.CreateAt = GetMillis()
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/saml.go b/vendor/github.com/mattermost/mattermost-server/model/saml.go
new file mode 100644
index 00000000..e7475015
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/saml.go
@@ -0,0 +1,40 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	USER_AUTH_SERVICE_SAML      = "saml"
+	USER_AUTH_SERVICE_SAML_TEXT = "With SAML"
+	SAML_IDP_CERTIFICATE        = 1
+	SAML_PRIVATE_KEY            = 2
+	SAML_PUBLIC_CERT            = 3
+)
+
+type SamlAuthRequest struct {
+	Base64AuthRequest string
+	URL               string
+	RelayState        string
+}
+
+type SamlCertificateStatus struct {
+	IdpCertificateFile    bool `json:"idp_certificate_file"`
+	PrivateKeyFile        bool `json:"private_key_file"`
+	PublicCertificateFile bool `json:"public_certificate_file"`
+}
+
+func (s *SamlCertificateStatus) ToJson() string {
+	b, _ := json.Marshal(s)
+	return string(b)
+}
+
+func SamlCertificateStatusFromJson(data io.Reader) *SamlCertificateStatus {
+	var status *SamlCertificateStatus
+	json.NewDecoder(data).Decode(&status)
+	return status
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/scheduled_task.go b/vendor/github.com/mattermost/mattermost-server/model/scheduled_task.go
new file mode 100644
index 00000000..453828bd
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/scheduled_task.go
@@ -0,0 +1,110 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"fmt"
+	"sync"
+	"time"
+)
+
+type TaskFunc func()
+
+type ScheduledTask struct {
+	Name      string        `json:"name"`
+	Interval  time.Duration `json:"interval"`
+	Recurring bool          `json:"recurring"`
+	function  TaskFunc
+	timer     *time.Timer
+}
+
+var taskMutex = sync.Mutex{}
+var tasks = make(map[string]*ScheduledTask)
+
+func addTask(task *ScheduledTask) {
+	taskMutex.Lock()
+	defer taskMutex.Unlock()
+	tasks[task.Name] = task
+}
+
+func removeTaskByName(name string) {
+	taskMutex.Lock()
+	defer taskMutex.Unlock()
+	delete(tasks, name)
+}
+
+func GetTaskByName(name string) *ScheduledTask {
+	taskMutex.Lock()
+	defer taskMutex.Unlock()
+	if task, ok := tasks[name]; ok {
+		return task
+	}
+	return nil
+}
+
+func GetAllTasks() *map[string]*ScheduledTask {
+	taskMutex.Lock()
+	defer taskMutex.Unlock()
+	return &tasks
+}
+
+func CreateTask(name string, function TaskFunc, timeToExecution time.Duration) *ScheduledTask {
+	task := &ScheduledTask{
+		Name:      name,
+		Interval:  timeToExecution,
+		Recurring: false,
+		function:  function,
+	}
+
+	taskRunner := func() {
+		go task.function()
+		removeTaskByName(task.Name)
+	}
+
+	task.timer = time.AfterFunc(timeToExecution, taskRunner)
+
+	addTask(task)
+
+	return task
+}
+
+func CreateRecurringTask(name string, function TaskFunc, interval time.Duration) *ScheduledTask {
+	task := &ScheduledTask{
+		Name:      name,
+		Interval:  interval,
+		Recurring: true,
+		function:  function,
+	}
+
+	taskRecurer := func() {
+		go task.function()
+		task.timer.Reset(task.Interval)
+	}
+
+	task.timer = time.AfterFunc(interval, taskRecurer)
+
+	addTask(task)
+
+	return task
+}
+
+func (task *ScheduledTask) Cancel() {
+	task.timer.Stop()
+	removeTaskByName(task.Name)
+}
+
+// Executes the task immediatly. A recurring task will be run regularally after interval.
+func (task *ScheduledTask) Execute() {
+	task.function()
+	task.timer.Reset(task.Interval)
+}
+
+func (task *ScheduledTask) String() string {
+	return fmt.Sprintf(
+		"%s\nInterval: %s\nRecurring: %t\n",
+		task.Name,
+		task.Interval.String(),
+		task.Recurring,
+	)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/search_params.go b/vendor/github.com/mattermost/mattermost-server/model/search_params.go
new file mode 100644
index 00000000..1692b3aa
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/search_params.go
@@ -0,0 +1,171 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"regexp"
+	"strings"
+)
+
+var searchTermPuncStart = regexp.MustCompile(`^[^\pL\d\s#"]+`)
+var searchTermPuncEnd = regexp.MustCompile(`[^\pL\d\s*"]+$`)
+
+type SearchParams struct {
+	Terms      string
+	IsHashtag  bool
+	InChannels []string
+	FromUsers  []string
+	OrTerms    bool
+}
+
+func (o *SearchParams) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+var searchFlags = [...]string{"from", "channel", "in"}
+
+func splitWords(text string) []string {
+	words := []string{}
+
+	foundQuote := false
+	location := 0
+	for i, char := range text {
+		if char == '"' {
+			if foundQuote {
+				// Grab the quoted section
+				word := text[location : i+1]
+				words = append(words, word)
+				foundQuote = false
+				location = i + 1
+			} else {
+				words = append(words, strings.Fields(text[location:i])...)
+				foundQuote = true
+				location = i
+			}
+		}
+	}
+
+	words = append(words, strings.Fields(text[location:])...)
+
+	return words
+}
+
+func parseSearchFlags(input []string) ([]string, [][2]string) {
+	words := []string{}
+	flags := [][2]string{}
+
+	skipNextWord := false
+	for i, word := range input {
+		if skipNextWord {
+			skipNextWord = false
+			continue
+		}
+
+		isFlag := false
+
+		if colon := strings.Index(word, ":"); colon != -1 {
+			flag := word[:colon]
+			value := word[colon+1:]
+
+			for _, searchFlag := range searchFlags {
+				// check for case insensitive equality
+				if strings.EqualFold(flag, searchFlag) {
+					if value != "" {
+						flags = append(flags, [2]string{searchFlag, value})
+						isFlag = true
+					} else if i < len(input)-1 {
+						flags = append(flags, [2]string{searchFlag, input[i+1]})
+						skipNextWord = true
+						isFlag = true
+					}
+
+					if isFlag {
+						break
+					}
+				}
+			}
+		}
+
+		if !isFlag {
+			// trim off surrounding punctuation (note that we leave trailing asterisks to allow wildcards)
+			word = searchTermPuncStart.ReplaceAllString(word, "")
+			word = searchTermPuncEnd.ReplaceAllString(word, "")
+
+			// and remove extra pound #s
+			word = hashtagStart.ReplaceAllString(word, "#")
+
+			if len(word) != 0 {
+				words = append(words, word)
+			}
+		}
+	}
+
+	return words, flags
+}
+
+func ParseSearchParams(text string) []*SearchParams {
+	words, flags := parseSearchFlags(splitWords(text))
+
+	hashtagTermList := []string{}
+	plainTermList := []string{}
+
+	for _, word := range words {
+		if validHashtag.MatchString(word) {
+			hashtagTermList = append(hashtagTermList, word)
+		} else {
+			plainTermList = append(plainTermList, word)
+		}
+	}
+
+	hashtagTerms := strings.Join(hashtagTermList, " ")
+	plainTerms := strings.Join(plainTermList, " ")
+
+	inChannels := []string{}
+	fromUsers := []string{}
+
+	for _, flagPair := range flags {
+		flag := flagPair[0]
+		value := flagPair[1]
+
+		if flag == "in" || flag == "channel" {
+			inChannels = append(inChannels, value)
+		} else if flag == "from" {
+			fromUsers = append(fromUsers, value)
+		}
+	}
+
+	paramsList := []*SearchParams{}
+
+	if len(plainTerms) > 0 {
+		paramsList = append(paramsList, &SearchParams{
+			Terms:      plainTerms,
+			IsHashtag:  false,
+			InChannels: inChannels,
+			FromUsers:  fromUsers,
+		})
+	}
+
+	if len(hashtagTerms) > 0 {
+		paramsList = append(paramsList, &SearchParams{
+			Terms:      hashtagTerms,
+			IsHashtag:  true,
+			InChannels: inChannels,
+			FromUsers:  fromUsers,
+		})
+	}
+
+	// special case for when no terms are specified but we still have a filter
+	if len(plainTerms) == 0 && len(hashtagTerms) == 0 && (len(inChannels) != 0 || len(fromUsers) != 0) {
+		paramsList = append(paramsList, &SearchParams{
+			Terms:      "",
+			IsHashtag:  false,
+			InChannels: inChannels,
+			FromUsers:  fromUsers,
+		})
+	}
+
+	return paramsList
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/security_bulletin.go b/vendor/github.com/mattermost/mattermost-server/model/security_bulletin.go
new file mode 100644
index 00000000..958b9c9e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/security_bulletin.go
@@ -0,0 +1,41 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type SecurityBulletin struct {
+	Id               string `json:"id"`
+	AppliesToVersion string `json:"applies_to_version"`
+}
+
+type SecurityBulletins []SecurityBulletin
+
+func (me *SecurityBulletin) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func SecurityBulletinFromJson(data io.Reader) *SecurityBulletin {
+	var o *SecurityBulletin
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (me SecurityBulletins) ToJson() string {
+	if b, err := json.Marshal(me); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func SecurityBulletinsFromJson(data io.Reader) SecurityBulletins {
+	var o SecurityBulletins
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/session.go b/vendor/github.com/mattermost/mattermost-server/model/session.go
new file mode 100644
index 00000000..a407af26
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/session.go
@@ -0,0 +1,137 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"strings"
+)
+
+const (
+	SESSION_COOKIE_TOKEN              = "MMAUTHTOKEN"
+	SESSION_COOKIE_USER               = "MMUSERID"
+	SESSION_CACHE_SIZE                = 35000
+	SESSION_PROP_PLATFORM             = "platform"
+	SESSION_PROP_OS                   = "os"
+	SESSION_PROP_BROWSER              = "browser"
+	SESSION_PROP_TYPE                 = "type"
+	SESSION_PROP_USER_ACCESS_TOKEN_ID = "user_access_token_id"
+	SESSION_TYPE_USER_ACCESS_TOKEN    = "UserAccessToken"
+	SESSION_ACTIVITY_TIMEOUT          = 1000 * 60 * 5 // 5 minutes
+	SESSION_USER_ACCESS_TOKEN_EXPIRY  = 100 * 365     // 100 years
+)
+
+type Session struct {
+	Id             string        `json:"id"`
+	Token          string        `json:"token"`
+	CreateAt       int64         `json:"create_at"`
+	ExpiresAt      int64         `json:"expires_at"`
+	LastActivityAt int64         `json:"last_activity_at"`
+	UserId         string        `json:"user_id"`
+	DeviceId       string        `json:"device_id"`
+	Roles          string        `json:"roles"`
+	IsOAuth        bool          `json:"is_oauth"`
+	Props          StringMap     `json:"props"`
+	TeamMembers    []*TeamMember `json:"team_members" db:"-"`
+}
+
+func (me *Session) DeepCopy() *Session {
+	copy := *me
+	return &copy
+}
+
+func (me *Session) ToJson() string {
+	b, _ := json.Marshal(me)
+	return string(b)
+}
+
+func SessionFromJson(data io.Reader) *Session {
+	var me *Session
+	json.NewDecoder(data).Decode(&me)
+	return me
+}
+
+func (me *Session) PreSave() {
+	if me.Id == "" {
+		me.Id = NewId()
+	}
+
+	if me.Token == "" {
+		me.Token = NewId()
+	}
+
+	me.CreateAt = GetMillis()
+	me.LastActivityAt = me.CreateAt
+
+	if me.Props == nil {
+		me.Props = make(map[string]string)
+	}
+}
+
+func (me *Session) Sanitize() {
+	me.Token = ""
+}
+
+func (me *Session) IsExpired() bool {
+
+	if me.ExpiresAt <= 0 {
+		return false
+	}
+
+	if GetMillis() > me.ExpiresAt {
+		return true
+	}
+
+	return false
+}
+
+func (me *Session) SetExpireInDays(days int) {
+	if me.CreateAt == 0 {
+		me.ExpiresAt = GetMillis() + (1000 * 60 * 60 * 24 * int64(days))
+	} else {
+		me.ExpiresAt = me.CreateAt + (1000 * 60 * 60 * 24 * int64(days))
+	}
+}
+
+func (me *Session) AddProp(key string, value string) {
+
+	if me.Props == nil {
+		me.Props = make(map[string]string)
+	}
+
+	me.Props[key] = value
+}
+
+func (me *Session) GetTeamByTeamId(teamId string) *TeamMember {
+	for _, team := range me.TeamMembers {
+		if team.TeamId == teamId {
+			return team
+		}
+	}
+
+	return nil
+}
+
+func (me *Session) IsMobileApp() bool {
+	return len(me.DeviceId) > 0
+}
+
+func (me *Session) GetUserRoles() []string {
+	return strings.Fields(me.Roles)
+}
+
+func SessionsToJson(o []*Session) string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func SessionsFromJson(data io.Reader) []*Session {
+	var o []*Session
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/slack_attachment.go b/vendor/github.com/mattermost/mattermost-server/model/slack_attachment.go
new file mode 100644
index 00000000..197d3f0f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/slack_attachment.go
@@ -0,0 +1,59 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"fmt"
+)
+
+type SlackAttachment struct {
+	Id         int64                   `json:"id"`
+	Fallback   string                  `json:"fallback"`
+	Color      string                  `json:"color"`
+	Pretext    string                  `json:"pretext"`
+	AuthorName string                  `json:"author_name"`
+	AuthorLink string                  `json:"author_link"`
+	AuthorIcon string                  `json:"author_icon"`
+	Title      string                  `json:"title"`
+	TitleLink  string                  `json:"title_link"`
+	Text       string                  `json:"text"`
+	Fields     []*SlackAttachmentField `json:"fields"`
+	ImageURL   string                  `json:"image_url"`
+	ThumbURL   string                  `json:"thumb_url"`
+	Footer     string                  `json:"footer"`
+	FooterIcon string                  `json:"footer_icon"`
+	Timestamp  interface{}             `json:"ts"` // This is either a string or an int64
+	Actions    []*PostAction           `json:"actions,omitempty"`
+}
+
+type SlackAttachmentField struct {
+	Title string      `json:"title"`
+	Value interface{} `json:"value"`
+	Short bool        `json:"short"`
+}
+
+func StringifySlackFieldValue(a []*SlackAttachment) []*SlackAttachment {
+	var nonNilAttachments []*SlackAttachment
+	for _, attachment := range a {
+		if attachment == nil {
+			continue
+		}
+		nonNilAttachments = append(nonNilAttachments, attachment)
+
+		var nonNilFields []*SlackAttachmentField
+		for _, field := range attachment.Fields {
+			if field == nil {
+				continue
+			}
+			nonNilFields = append(nonNilFields, field)
+
+			if field.Value != nil {
+				// Ensure the value is set to a string if it is set
+				field.Value = fmt.Sprintf("%v", field.Value)
+			}
+		}
+		attachment.Fields = nonNilFields
+	}
+	return nonNilAttachments
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/status.go b/vendor/github.com/mattermost/mattermost-server/model/status.go
new file mode 100644
index 00000000..cd9e32ed
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/status.go
@@ -0,0 +1,60 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	STATUS_OFFLINE         = "offline"
+	STATUS_AWAY            = "away"
+	STATUS_DND             = "dnd"
+	STATUS_ONLINE          = "online"
+	STATUS_CACHE_SIZE      = SESSION_CACHE_SIZE
+	STATUS_CHANNEL_TIMEOUT = 20000  // 20 seconds
+	STATUS_MIN_UPDATE_TIME = 120000 // 2 minutes
+)
+
+type Status struct {
+	UserId         string `json:"user_id"`
+	Status         string `json:"status"`
+	Manual         bool   `json:"manual"`
+	LastActivityAt int64  `json:"last_activity_at"`
+	ActiveChannel  string `json:"-" db:"-"`
+}
+
+func (o *Status) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func StatusFromJson(data io.Reader) *Status {
+	var o *Status
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func StatusListToJson(u []*Status) string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func StatusListFromJson(data io.Reader) []*Status {
+	var statuses []*Status
+	json.NewDecoder(data).Decode(&statuses)
+	return statuses
+}
+
+func StatusMapToInterfaceMap(statusMap map[string]*Status) map[string]interface{} {
+	interfaceMap := map[string]interface{}{}
+	for _, s := range statusMap {
+		// Omitted statues mean offline
+		if s.Status != STATUS_OFFLINE {
+			interfaceMap[s.UserId] = s.Status
+		}
+	}
+	return interfaceMap
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/suggest_command.go b/vendor/github.com/mattermost/mattermost-server/model/suggest_command.go
new file mode 100644
index 00000000..44f46bf7
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/suggest_command.go
@@ -0,0 +1,25 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type SuggestCommand struct {
+	Suggestion  string `json:"suggestion"`
+	Description string `json:"description"`
+}
+
+func (o *SuggestCommand) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func SuggestCommandFromJson(data io.Reader) *SuggestCommand {
+	var o *SuggestCommand
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/switch_request.go b/vendor/github.com/mattermost/mattermost-server/model/switch_request.go
new file mode 100644
index 00000000..e153c92f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/switch_request.go
@@ -0,0 +1,53 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type SwitchRequest struct {
+	CurrentService string `json:"current_service"`
+	NewService     string `json:"new_service"`
+	Email          string `json:"email"`
+	Password       string `json:"password"`
+	NewPassword    string `json:"new_password"`
+	MfaCode        string `json:"mfa_code"`
+	LdapId         string `json:"ldap_id"`
+}
+
+func (o *SwitchRequest) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func SwitchRequestFromJson(data io.Reader) *SwitchRequest {
+	var o *SwitchRequest
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *SwitchRequest) EmailToOAuth() bool {
+	return o.CurrentService == USER_AUTH_SERVICE_EMAIL &&
+		(o.NewService == USER_AUTH_SERVICE_SAML ||
+			o.NewService == USER_AUTH_SERVICE_GITLAB ||
+			o.NewService == SERVICE_GOOGLE ||
+			o.NewService == SERVICE_OFFICE365)
+}
+
+func (o *SwitchRequest) OAuthToEmail() bool {
+	return (o.CurrentService == USER_AUTH_SERVICE_SAML ||
+		o.CurrentService == USER_AUTH_SERVICE_GITLAB ||
+		o.CurrentService == SERVICE_GOOGLE ||
+		o.CurrentService == SERVICE_OFFICE365) && o.NewService == USER_AUTH_SERVICE_EMAIL
+}
+
+func (o *SwitchRequest) EmailToLdap() bool {
+	return o.CurrentService == USER_AUTH_SERVICE_EMAIL && o.NewService == USER_AUTH_SERVICE_LDAP
+}
+
+func (o *SwitchRequest) LdapToEmail() bool {
+	return o.CurrentService == USER_AUTH_SERVICE_LDAP && o.NewService == USER_AUTH_SERVICE_EMAIL
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/system.go b/vendor/github.com/mattermost/mattermost-server/model/system.go
new file mode 100644
index 00000000..2a636b14
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/system.go
@@ -0,0 +1,46 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"math/big"
+)
+
+const (
+	SYSTEM_DIAGNOSTIC_ID          = "DiagnosticId"
+	SYSTEM_RAN_UNIT_TESTS         = "RanUnitTests"
+	SYSTEM_LAST_SECURITY_TIME     = "LastSecurityTime"
+	SYSTEM_ACTIVE_LICENSE_ID      = "ActiveLicenseId"
+	SYSTEM_LAST_COMPLIANCE_TIME   = "LastComplianceTime"
+	SYSTEM_ASYMMETRIC_SIGNING_KEY = "AsymmetricSigningKey"
+)
+
+type System struct {
+	Name  string `json:"name"`
+	Value string `json:"value"`
+}
+
+func (o *System) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func SystemFromJson(data io.Reader) *System {
+	var o *System
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+type SystemAsymmetricSigningKey struct {
+	ECDSAKey *SystemECDSAKey `json:"ecdsa_key,omitempty"`
+}
+
+type SystemECDSAKey struct {
+	Curve string   `json:"curve"`
+	X     *big.Int `json:"x"`
+	Y     *big.Int `json:"y"`
+	D     *big.Int `json:"d,omitempty"`
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/team.go b/vendor/github.com/mattermost/mattermost-server/model/team.go
new file mode 100644
index 00000000..5b6eb1fa
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/team.go
@@ -0,0 +1,294 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+)
+
+const (
+	TEAM_OPEN                       = "O"
+	TEAM_INVITE                     = "I"
+	TEAM_ALLOWED_DOMAINS_MAX_LENGTH = 500
+	TEAM_COMPANY_NAME_MAX_LENGTH    = 64
+	TEAM_DESCRIPTION_MAX_LENGTH     = 255
+	TEAM_DISPLAY_NAME_MAX_RUNES     = 64
+	TEAM_EMAIL_MAX_LENGTH           = 128
+	TEAM_NAME_MAX_LENGTH            = 64
+	TEAM_NAME_MIN_LENGTH            = 2
+)
+
+type Team struct {
+	Id              string `json:"id"`
+	CreateAt        int64  `json:"create_at"`
+	UpdateAt        int64  `json:"update_at"`
+	DeleteAt        int64  `json:"delete_at"`
+	DisplayName     string `json:"display_name"`
+	Name            string `json:"name"`
+	Description     string `json:"description"`
+	Email           string `json:"email"`
+	Type            string `json:"type"`
+	CompanyName     string `json:"company_name"`
+	AllowedDomains  string `json:"allowed_domains"`
+	InviteId        string `json:"invite_id"`
+	AllowOpenInvite bool   `json:"allow_open_invite"`
+}
+
+type TeamPatch struct {
+	DisplayName     *string `json:"display_name"`
+	Description     *string `json:"description"`
+	CompanyName     *string `json:"company_name"`
+	InviteId        *string `json:"invite_id"`
+	AllowOpenInvite *bool   `json:"allow_open_invite"`
+}
+
+type Invites struct {
+	Invites []map[string]string `json:"invites"`
+}
+
+func InvitesFromJson(data io.Reader) *Invites {
+	var o *Invites
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *Invites) ToEmailList() []string {
+	emailList := make([]string, len(o.Invites))
+	for _, invite := range o.Invites {
+		emailList = append(emailList, invite["email"])
+	}
+	return emailList
+}
+
+func (o *Invites) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *Team) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func TeamFromJson(data io.Reader) *Team {
+	var o *Team
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func TeamMapToJson(u map[string]*Team) string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func TeamMapFromJson(data io.Reader) map[string]*Team {
+	var teams map[string]*Team
+	json.NewDecoder(data).Decode(&teams)
+	return teams
+}
+
+func TeamListToJson(t []*Team) string {
+	b, _ := json.Marshal(t)
+	return string(b)
+}
+
+func TeamListFromJson(data io.Reader) []*Team {
+	var teams []*Team
+	json.NewDecoder(data).Decode(&teams)
+	return teams
+}
+
+func (o *Team) Etag() string {
+	return Etag(o.Id, o.UpdateAt)
+}
+
+func (o *Team) IsValid() *AppError {
+
+	if len(o.Id) != 26 {
+		return NewAppError("Team.IsValid", "model.team.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if o.CreateAt == 0 {
+		return NewAppError("Team.IsValid", "model.team.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if o.UpdateAt == 0 {
+		return NewAppError("Team.IsValid", "model.team.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.Email) > TEAM_EMAIL_MAX_LENGTH {
+		return NewAppError("Team.IsValid", "model.team.is_valid.email.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.Email) > 0 && !IsValidEmail(o.Email) {
+		return NewAppError("Team.IsValid", "model.team.is_valid.email.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if utf8.RuneCountInString(o.DisplayName) == 0 || utf8.RuneCountInString(o.DisplayName) > TEAM_DISPLAY_NAME_MAX_RUNES {
+		return NewAppError("Team.IsValid", "model.team.is_valid.name.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.Name) > TEAM_NAME_MAX_LENGTH {
+		return NewAppError("Team.IsValid", "model.team.is_valid.url.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.Description) > TEAM_DESCRIPTION_MAX_LENGTH {
+		return NewAppError("Team.IsValid", "model.team.is_valid.description.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if IsReservedTeamName(o.Name) {
+		return NewAppError("Team.IsValid", "model.team.is_valid.reserved.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if !IsValidTeamName(o.Name) {
+		return NewAppError("Team.IsValid", "model.team.is_valid.characters.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if !(o.Type == TEAM_OPEN || o.Type == TEAM_INVITE) {
+		return NewAppError("Team.IsValid", "model.team.is_valid.type.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.CompanyName) > TEAM_COMPANY_NAME_MAX_LENGTH {
+		return NewAppError("Team.IsValid", "model.team.is_valid.company.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	if len(o.AllowedDomains) > TEAM_ALLOWED_DOMAINS_MAX_LENGTH {
+		return NewAppError("Team.IsValid", "model.team.is_valid.domains.app_error", nil, "id="+o.Id, http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *Team) PreSave() {
+	if o.Id == "" {
+		o.Id = NewId()
+	}
+
+	o.CreateAt = GetMillis()
+	o.UpdateAt = o.CreateAt
+
+	if len(o.InviteId) == 0 {
+		o.InviteId = NewId()
+	}
+}
+
+func (o *Team) PreUpdate() {
+	o.UpdateAt = GetMillis()
+}
+
+func IsReservedTeamName(s string) bool {
+	s = strings.ToLower(s)
+
+	for _, value := range reservedName {
+		if strings.Index(s, value) == 0 {
+			return true
+		}
+	}
+
+	return false
+}
+
+func IsValidTeamName(s string) bool {
+
+	if !IsValidAlphaNum(s) {
+		return false
+	}
+
+	if len(s) < TEAM_NAME_MIN_LENGTH {
+		return false
+	}
+
+	return true
+}
+
+var validTeamNameCharacter = regexp.MustCompile(`^[a-z0-9-]$`)
+
+func CleanTeamName(s string) string {
+	s = strings.ToLower(strings.Replace(s, " ", "-", -1))
+
+	for _, value := range reservedName {
+		if strings.Index(s, value) == 0 {
+			s = strings.Replace(s, value, "", -1)
+		}
+	}
+
+	s = strings.TrimSpace(s)
+
+	for _, c := range s {
+		char := fmt.Sprintf("%c", c)
+		if !validTeamNameCharacter.MatchString(char) {
+			s = strings.Replace(s, char, "", -1)
+		}
+	}
+
+	s = strings.Trim(s, "-")
+
+	if !IsValidTeamName(s) {
+		s = NewId()
+	}
+
+	return s
+}
+
+func (o *Team) Sanitize() {
+	o.Email = ""
+	o.AllowedDomains = ""
+}
+
+func (o *Team) SanitizeForNotLoggedIn() {
+	o.Email = ""
+	o.AllowedDomains = ""
+	o.CompanyName = ""
+	if !o.AllowOpenInvite {
+		o.InviteId = ""
+	}
+}
+
+func (t *Team) Patch(patch *TeamPatch) {
+	if patch.DisplayName != nil {
+		t.DisplayName = *patch.DisplayName
+	}
+
+	if patch.Description != nil {
+		t.Description = *patch.Description
+	}
+
+	if patch.CompanyName != nil {
+		t.CompanyName = *patch.CompanyName
+	}
+
+	if patch.InviteId != nil {
+		t.InviteId = *patch.InviteId
+	}
+
+	if patch.AllowOpenInvite != nil {
+		t.AllowOpenInvite = *patch.AllowOpenInvite
+	}
+}
+
+func (t *TeamPatch) ToJson() string {
+	b, err := json.Marshal(t)
+	if err != nil {
+		return ""
+	}
+
+	return string(b)
+}
+
+func TeamPatchFromJson(data io.Reader) *TeamPatch {
+	decoder := json.NewDecoder(data)
+	var team TeamPatch
+	err := decoder.Decode(&team)
+	if err != nil {
+		return nil
+	}
+
+	return &team
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/team_member.go b/vendor/github.com/mattermost/mattermost-server/model/team_member.go
new file mode 100644
index 00000000..2fcd1e15
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/team_member.go
@@ -0,0 +1,94 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+)
+
+type TeamMember struct {
+	TeamId   string `json:"team_id"`
+	UserId   string `json:"user_id"`
+	Roles    string `json:"roles"`
+	DeleteAt int64  `json:"delete_at"`
+}
+
+type TeamUnread struct {
+	TeamId       string `json:"team_id"`
+	MsgCount     int64  `json:"msg_count"`
+	MentionCount int64  `json:"mention_count"`
+}
+
+func (o *TeamMember) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func (o *TeamUnread) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func TeamMemberFromJson(data io.Reader) *TeamMember {
+	var o *TeamMember
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func TeamUnreadFromJson(data io.Reader) *TeamUnread {
+	var o *TeamUnread
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func TeamMembersToJson(o []*TeamMember) string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func TeamMembersFromJson(data io.Reader) []*TeamMember {
+	var o []*TeamMember
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func TeamsUnreadToJson(o []*TeamUnread) string {
+	if b, err := json.Marshal(o); err != nil {
+		return "[]"
+	} else {
+		return string(b)
+	}
+}
+
+func TeamsUnreadFromJson(data io.Reader) []*TeamUnread {
+	var o []*TeamUnread
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *TeamMember) IsValid() *AppError {
+
+	if len(o.TeamId) != 26 {
+		return NewAppError("TeamMember.IsValid", "model.team_member.is_valid.team_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(o.UserId) != 26 {
+		return NewAppError("TeamMember.IsValid", "model.team_member.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (o *TeamMember) PreUpdate() {
+}
+
+func (o *TeamMember) GetRoles() []string {
+	return strings.Fields(o.Roles)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/team_search.go b/vendor/github.com/mattermost/mattermost-server/model/team_search.go
new file mode 100644
index 00000000..e0676022
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/team_search.go
@@ -0,0 +1,35 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type TeamSearch struct {
+	Term string `json:"term"`
+}
+
+// ToJson convert a TeamSearch to json string
+func (c *TeamSearch) ToJson() string {
+	b, err := json.Marshal(c)
+	if err != nil {
+		return ""
+	}
+
+	return string(b)
+}
+
+// TeamSearchFromJson decodes the input and returns a TeamSearch
+func TeamSearchFromJson(data io.Reader) *TeamSearch {
+	decoder := json.NewDecoder(data)
+	var cs TeamSearch
+	err := decoder.Decode(&cs)
+	if err == nil {
+		return &cs
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/team_stats.go b/vendor/github.com/mattermost/mattermost-server/model/team_stats.go
new file mode 100644
index 00000000..0d688b80
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/team_stats.go
@@ -0,0 +1,26 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type TeamStats struct {
+	TeamId            string `json:"team_id"`
+	TotalMemberCount  int64  `json:"total_member_count"`
+	ActiveMemberCount int64  `json:"active_member_count"`
+}
+
+func (o *TeamStats) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func TeamStatsFromJson(data io.Reader) *TeamStats {
+	var o *TeamStats
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/token.go b/vendor/github.com/mattermost/mattermost-server/model/token.go
new file mode 100644
index 00000000..a4d10c7f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/token.go
@@ -0,0 +1,40 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import "net/http"
+
+const (
+	TOKEN_SIZE            = 64
+	MAX_TOKEN_EXIPRY_TIME = 1000 * 60 * 60 * 24 // 24 hour
+	TOKEN_TYPE_OAUTH      = "oauth"
+)
+
+type Token struct {
+	Token    string
+	CreateAt int64
+	Type     string
+	Extra    string
+}
+
+func NewToken(tokentype, extra string) *Token {
+	return &Token{
+		Token:    NewRandomString(TOKEN_SIZE),
+		CreateAt: GetMillis(),
+		Type:     tokentype,
+		Extra:    extra,
+	}
+}
+
+func (t *Token) IsValid() *AppError {
+	if len(t.Token) != TOKEN_SIZE {
+		return NewAppError("Token.IsValid", "model.token.is_valid.size", nil, "", http.StatusInternalServerError)
+	}
+
+	if t.CreateAt == 0 {
+		return NewAppError("Token.IsValid", "model.token.is_valid.expiry", nil, "", http.StatusInternalServerError)
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user.go b/vendor/github.com/mattermost/mattermost-server/model/user.go
new file mode 100644
index 00000000..1e1d49f7
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/user.go
@@ -0,0 +1,616 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+const (
+	ME                           = "me"
+	USER_NOTIFY_ALL              = "all"
+	USER_NOTIFY_MENTION          = "mention"
+	USER_NOTIFY_NONE             = "none"
+	DESKTOP_NOTIFY_PROP          = "desktop"
+	DESKTOP_SOUND_NOTIFY_PROP    = "desktop_sound"
+	DESKTOP_DURATION_NOTIFY_PROP = "desktop_duration"
+	MARK_UNREAD_NOTIFY_PROP      = "mark_unread"
+	PUSH_NOTIFY_PROP             = "push"
+	PUSH_STATUS_NOTIFY_PROP      = "push_status"
+	EMAIL_NOTIFY_PROP            = "email"
+	CHANNEL_MENTIONS_NOTIFY_PROP = "channel"
+	COMMENTS_NOTIFY_PROP         = "comments"
+	MENTION_KEYS_NOTIFY_PROP     = "mention_keys"
+	COMMENTS_NOTIFY_NEVER        = "never"
+	COMMENTS_NOTIFY_ROOT         = "root"
+	COMMENTS_NOTIFY_ANY          = "any"
+
+	DEFAULT_LOCALE          = "en"
+	USER_AUTH_SERVICE_EMAIL = "email"
+
+	USER_EMAIL_MAX_LENGTH     = 128
+	USER_NICKNAME_MAX_RUNES   = 64
+	USER_POSITION_MAX_RUNES   = 128
+	USER_FIRST_NAME_MAX_RUNES = 64
+	USER_LAST_NAME_MAX_RUNES  = 64
+	USER_AUTH_DATA_MAX_LENGTH = 128
+	USER_NAME_MAX_LENGTH      = 64
+	USER_NAME_MIN_LENGTH      = 1
+	USER_PASSWORD_MAX_LENGTH  = 72
+)
+
+type User struct {
+	Id                 string    `json:"id"`
+	CreateAt           int64     `json:"create_at,omitempty"`
+	UpdateAt           int64     `json:"update_at,omitempty"`
+	DeleteAt           int64     `json:"delete_at"`
+	Username           string    `json:"username"`
+	Password           string    `json:"password,omitempty"`
+	AuthData           *string   `json:"auth_data,omitempty"`
+	AuthService        string    `json:"auth_service"`
+	Email              string    `json:"email"`
+	EmailVerified      bool      `json:"email_verified,omitempty"`
+	Nickname           string    `json:"nickname"`
+	FirstName          string    `json:"first_name"`
+	LastName           string    `json:"last_name"`
+	Position           string    `json:"position"`
+	Roles              string    `json:"roles"`
+	AllowMarketing     bool      `json:"allow_marketing,omitempty"`
+	Props              StringMap `json:"props,omitempty"`
+	NotifyProps        StringMap `json:"notify_props,omitempty"`
+	LastPasswordUpdate int64     `json:"last_password_update,omitempty"`
+	LastPictureUpdate  int64     `json:"last_picture_update,omitempty"`
+	FailedAttempts     int       `json:"failed_attempts,omitempty"`
+	Locale             string    `json:"locale"`
+	MfaActive          bool      `json:"mfa_active,omitempty"`
+	MfaSecret          string    `json:"mfa_secret,omitempty"`
+	LastActivityAt     int64     `db:"-" json:"last_activity_at,omitempty"`
+}
+
+type UserPatch struct {
+	Username    *string   `json:"username"`
+	Nickname    *string   `json:"nickname"`
+	FirstName   *string   `json:"first_name"`
+	LastName    *string   `json:"last_name"`
+	Position    *string   `json:"position"`
+	Email       *string   `json:"email"`
+	Props       StringMap `json:"props,omitempty"`
+	NotifyProps StringMap `json:"notify_props,omitempty"`
+	Locale      *string   `json:"locale"`
+}
+
+type UserAuth struct {
+	Password    string  `json:"password,omitempty"`
+	AuthData    *string `json:"auth_data,omitempty"`
+	AuthService string  `json:"auth_service,omitempty"`
+}
+
+// IsValid validates the user and returns an error if it isn't configured
+// correctly.
+func (u *User) IsValid() *AppError {
+
+	if len(u.Id) != 26 {
+		return InvalidUserError("id", "")
+	}
+
+	if u.CreateAt == 0 {
+		return InvalidUserError("create_at", u.Id)
+	}
+
+	if u.UpdateAt == 0 {
+		return InvalidUserError("update_at", u.Id)
+	}
+
+	if !IsValidUsername(u.Username) {
+		return InvalidUserError("username", u.Id)
+	}
+
+	if len(u.Email) > USER_EMAIL_MAX_LENGTH || len(u.Email) == 0 {
+		return InvalidUserError("email", u.Id)
+	}
+
+	if utf8.RuneCountInString(u.Nickname) > USER_NICKNAME_MAX_RUNES {
+		return InvalidUserError("nickname", u.Id)
+	}
+
+	if utf8.RuneCountInString(u.Position) > USER_POSITION_MAX_RUNES {
+		return InvalidUserError("position", u.Id)
+	}
+
+	if utf8.RuneCountInString(u.FirstName) > USER_FIRST_NAME_MAX_RUNES {
+		return InvalidUserError("first_name", u.Id)
+	}
+
+	if utf8.RuneCountInString(u.LastName) > USER_LAST_NAME_MAX_RUNES {
+		return InvalidUserError("last_name", u.Id)
+	}
+
+	if u.AuthData != nil && len(*u.AuthData) > USER_AUTH_DATA_MAX_LENGTH {
+		return InvalidUserError("auth_data", u.Id)
+	}
+
+	if u.AuthData != nil && len(*u.AuthData) > 0 && len(u.AuthService) == 0 {
+		return InvalidUserError("auth_data_type", u.Id)
+	}
+
+	if len(u.Password) > 0 && u.AuthData != nil && len(*u.AuthData) > 0 {
+		return InvalidUserError("auth_data_pwd", u.Id)
+	}
+
+	if len(u.Password) > USER_PASSWORD_MAX_LENGTH {
+		return InvalidUserError("password_limit", u.Id)
+	}
+
+	return nil
+}
+
+func InvalidUserError(fieldName string, userId string) *AppError {
+	id := fmt.Sprintf("model.user.is_valid.%s.app_error", fieldName)
+	details := ""
+	if userId != "" {
+		details = "user_id=" + userId
+	}
+	return NewAppError("User.IsValid", id, nil, details, http.StatusBadRequest)
+}
+
+func NormalizeUsername(username string) string {
+	return strings.ToLower(username)
+}
+
+func NormalizeEmail(email string) string {
+	return strings.ToLower(email)
+}
+
+// PreSave will set the Id and Username if missing.  It will also fill
+// in the CreateAt, UpdateAt times.  It will also hash the password.  It should
+// be run before saving the user to the db.
+func (u *User) PreSave() {
+	if u.Id == "" {
+		u.Id = NewId()
+	}
+
+	if u.Username == "" {
+		u.Username = NewId()
+	}
+
+	if u.AuthData != nil && *u.AuthData == "" {
+		u.AuthData = nil
+	}
+
+	u.Username = NormalizeUsername(u.Username)
+	u.Email = NormalizeEmail(u.Email)
+
+	u.CreateAt = GetMillis()
+	u.UpdateAt = u.CreateAt
+
+	u.LastPasswordUpdate = u.CreateAt
+
+	u.MfaActive = false
+
+	if u.Locale == "" {
+		u.Locale = DEFAULT_LOCALE
+	}
+
+	if u.Props == nil {
+		u.Props = make(map[string]string)
+	}
+
+	if u.NotifyProps == nil || len(u.NotifyProps) == 0 {
+		u.SetDefaultNotifications()
+	}
+
+	if len(u.Password) > 0 {
+		u.Password = HashPassword(u.Password)
+	}
+}
+
+// PreUpdate should be run before updating the user in the db.
+func (u *User) PreUpdate() {
+	u.Username = NormalizeUsername(u.Username)
+	u.Email = NormalizeEmail(u.Email)
+	u.UpdateAt = GetMillis()
+
+	if u.AuthData != nil && *u.AuthData == "" {
+		u.AuthData = nil
+	}
+
+	if u.NotifyProps == nil || len(u.NotifyProps) == 0 {
+		u.SetDefaultNotifications()
+	} else if _, ok := u.NotifyProps["mention_keys"]; ok {
+		// Remove any blank mention keys
+		splitKeys := strings.Split(u.NotifyProps["mention_keys"], ",")
+		goodKeys := []string{}
+		for _, key := range splitKeys {
+			if len(key) > 0 {
+				goodKeys = append(goodKeys, strings.ToLower(key))
+			}
+		}
+		u.NotifyProps["mention_keys"] = strings.Join(goodKeys, ",")
+	}
+}
+
+func (u *User) SetDefaultNotifications() {
+	u.NotifyProps = make(map[string]string)
+	u.NotifyProps["email"] = "true"
+	u.NotifyProps["push"] = USER_NOTIFY_MENTION
+	u.NotifyProps["desktop"] = USER_NOTIFY_MENTION
+	u.NotifyProps["desktop_sound"] = "true"
+	u.NotifyProps["mention_keys"] = u.Username + ",@" + u.Username
+	u.NotifyProps["channel"] = "true"
+	u.NotifyProps["push_status"] = STATUS_AWAY
+	u.NotifyProps["comments"] = "never"
+	u.NotifyProps["first_name"] = "false"
+}
+
+func (user *User) UpdateMentionKeysFromUsername(oldUsername string) {
+	nonUsernameKeys := []string{}
+	splitKeys := strings.Split(user.NotifyProps["mention_keys"], ",")
+	for _, key := range splitKeys {
+		if key != oldUsername && key != "@"+oldUsername {
+			nonUsernameKeys = append(nonUsernameKeys, key)
+		}
+	}
+
+	user.NotifyProps["mention_keys"] = user.Username + ",@" + user.Username
+	if len(nonUsernameKeys) > 0 {
+		user.NotifyProps["mention_keys"] += "," + strings.Join(nonUsernameKeys, ",")
+	}
+}
+
+func (u *User) Patch(patch *UserPatch) {
+	if patch.Username != nil {
+		u.Username = *patch.Username
+	}
+
+	if patch.Nickname != nil {
+		u.Nickname = *patch.Nickname
+	}
+
+	if patch.FirstName != nil {
+		u.FirstName = *patch.FirstName
+	}
+
+	if patch.LastName != nil {
+		u.LastName = *patch.LastName
+	}
+
+	if patch.Position != nil {
+		u.Position = *patch.Position
+	}
+
+	if patch.Email != nil {
+		u.Email = *patch.Email
+	}
+
+	if patch.Props != nil {
+		u.Props = patch.Props
+	}
+
+	if patch.NotifyProps != nil {
+		u.NotifyProps = patch.NotifyProps
+	}
+
+	if patch.Locale != nil {
+		u.Locale = *patch.Locale
+	}
+}
+
+// ToJson convert a User to a json string
+func (u *User) ToJson() string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func (u *UserPatch) ToJson() string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func (u *UserAuth) ToJson() string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+// Generate a valid strong etag so the browser can cache the results
+func (u *User) Etag(showFullName, showEmail bool) string {
+	return Etag(u.Id, u.UpdateAt, showFullName, showEmail)
+}
+
+// Remove any private data from the user object
+func (u *User) Sanitize(options map[string]bool) {
+	u.Password = ""
+	u.AuthData = NewString("")
+	u.MfaSecret = ""
+
+	if len(options) != 0 && !options["email"] {
+		u.Email = ""
+	}
+	if len(options) != 0 && !options["fullname"] {
+		u.FirstName = ""
+		u.LastName = ""
+	}
+	if len(options) != 0 && !options["passwordupdate"] {
+		u.LastPasswordUpdate = 0
+	}
+	if len(options) != 0 && !options["authservice"] {
+		u.AuthService = ""
+	}
+}
+
+func (u *User) ClearNonProfileFields() {
+	u.Password = ""
+	u.AuthData = NewString("")
+	u.MfaSecret = ""
+	u.EmailVerified = false
+	u.AllowMarketing = false
+	u.NotifyProps = StringMap{}
+	u.LastPasswordUpdate = 0
+	u.FailedAttempts = 0
+}
+
+func (u *User) SanitizeProfile(options map[string]bool) {
+	u.ClearNonProfileFields()
+
+	u.Sanitize(options)
+}
+
+func (u *User) MakeNonNil() {
+	if u.Props == nil {
+		u.Props = make(map[string]string)
+	}
+
+	if u.NotifyProps == nil {
+		u.NotifyProps = make(map[string]string)
+	}
+}
+
+func (u *User) AddProp(key string, value string) {
+	u.MakeNonNil()
+
+	u.Props[key] = value
+}
+
+func (u *User) AddNotifyProp(key string, value string) {
+	u.MakeNonNil()
+
+	u.NotifyProps[key] = value
+}
+
+func (u *User) GetFullName() string {
+	if u.FirstName != "" && u.LastName != "" {
+		return u.FirstName + " " + u.LastName
+	} else if u.FirstName != "" {
+		return u.FirstName
+	} else if u.LastName != "" {
+		return u.LastName
+	} else {
+		return ""
+	}
+}
+
+func (u *User) GetDisplayName(nameFormat string) string {
+	displayName := u.Username
+
+	if nameFormat == SHOW_NICKNAME_FULLNAME {
+		if u.Nickname != "" {
+			displayName = u.Nickname
+		} else if fullName := u.GetFullName(); fullName != "" {
+			displayName = fullName
+		}
+	} else if nameFormat == SHOW_FULLNAME {
+		if fullName := u.GetFullName(); fullName != "" {
+			displayName = fullName
+		}
+	}
+
+	return displayName
+}
+
+func (u *User) GetRoles() []string {
+	return strings.Fields(u.Roles)
+}
+
+func (u *User) GetRawRoles() string {
+	return u.Roles
+}
+
+func IsValidUserRoles(userRoles string) bool {
+
+	roles := strings.Fields(userRoles)
+
+	for _, r := range roles {
+		if !isValidRole(r) {
+			return false
+		}
+	}
+
+	// Exclude just the system_admin role explicitly to prevent mistakes
+	if len(roles) == 1 && roles[0] == "system_admin" {
+		return false
+	}
+
+	return true
+}
+
+func isValidRole(roleId string) bool {
+	_, ok := DefaultRoles[roleId]
+	return ok
+}
+
+// Make sure you acually want to use this function. In context.go there are functions to check permissions
+// This function should not be used to check permissions.
+func (u *User) IsInRole(inRole string) bool {
+	return IsInRole(u.Roles, inRole)
+}
+
+// Make sure you acually want to use this function. In context.go there are functions to check permissions
+// This function should not be used to check permissions.
+func IsInRole(userRoles string, inRole string) bool {
+	roles := strings.Split(userRoles, " ")
+
+	for _, r := range roles {
+		if r == inRole {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (u *User) IsSSOUser() bool {
+	return u.AuthService != "" && u.AuthService != USER_AUTH_SERVICE_EMAIL
+}
+
+func (u *User) IsOAuthUser() bool {
+	return u.AuthService == USER_AUTH_SERVICE_GITLAB
+}
+
+func (u *User) IsLDAPUser() bool {
+	return u.AuthService == USER_AUTH_SERVICE_LDAP
+}
+
+func (u *User) IsSAMLUser() bool {
+	return u.AuthService == USER_AUTH_SERVICE_SAML
+}
+
+// UserFromJson will decode the input and return a User
+func UserFromJson(data io.Reader) *User {
+	var user *User
+	json.NewDecoder(data).Decode(&user)
+	return user
+}
+
+func UserPatchFromJson(data io.Reader) *UserPatch {
+	var user *UserPatch
+	json.NewDecoder(data).Decode(&user)
+	return user
+}
+
+func UserAuthFromJson(data io.Reader) *UserAuth {
+	var user *UserAuth
+	json.NewDecoder(data).Decode(&user)
+	return user
+}
+
+func UserMapToJson(u map[string]*User) string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func UserMapFromJson(data io.Reader) map[string]*User {
+	var users map[string]*User
+	json.NewDecoder(data).Decode(&users)
+	return users
+}
+
+func UserListToJson(u []*User) string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+func UserListFromJson(data io.Reader) []*User {
+	var users []*User
+	json.NewDecoder(data).Decode(&users)
+	return users
+}
+
+// HashPassword generates a hash using the bcrypt.GenerateFromPassword
+func HashPassword(password string) string {
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), 10)
+	if err != nil {
+		panic(err)
+	}
+
+	return string(hash)
+}
+
+// ComparePassword compares the hash
+func ComparePassword(hash string, password string) bool {
+
+	if len(password) == 0 || len(hash) == 0 {
+		return false
+	}
+
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}
+
+var validUsernameChars = regexp.MustCompile(`^[a-z0-9\.\-_]+$`)
+
+var restrictedUsernames = []string{
+	"all",
+	"channel",
+	"matterbot",
+}
+
+func IsValidUsername(s string) bool {
+	if len(s) < USER_NAME_MIN_LENGTH || len(s) > USER_NAME_MAX_LENGTH {
+		return false
+	}
+
+	if !validUsernameChars.MatchString(s) {
+		return false
+	}
+
+	for _, restrictedUsername := range restrictedUsernames {
+		if s == restrictedUsername {
+			return false
+		}
+	}
+
+	return true
+}
+
+func CleanUsername(s string) string {
+	s = NormalizeUsername(strings.Replace(s, " ", "-", -1))
+
+	for _, value := range reservedName {
+		if s == value {
+			s = strings.Replace(s, value, "", -1)
+		}
+	}
+
+	s = strings.TrimSpace(s)
+
+	for _, c := range s {
+		char := fmt.Sprintf("%c", c)
+		if !validUsernameChars.MatchString(char) {
+			s = strings.Replace(s, char, "-", -1)
+		}
+	}
+
+	s = strings.Trim(s, "-")
+
+	if !IsValidUsername(s) {
+		s = "a" + NewId()
+	}
+
+	return s
+}
+
+func IsValidUserNotifyLevel(notifyLevel string) bool {
+	return notifyLevel == CHANNEL_NOTIFY_ALL ||
+		notifyLevel == CHANNEL_NOTIFY_MENTION ||
+		notifyLevel == CHANNEL_NOTIFY_NONE
+}
+
+func IsValidPushStatusNotifyLevel(notifyLevel string) bool {
+	return notifyLevel == STATUS_ONLINE ||
+		notifyLevel == STATUS_AWAY ||
+		notifyLevel == STATUS_OFFLINE
+}
+
+func IsValidCommentsNotifyLevel(notifyLevel string) bool {
+	return notifyLevel == COMMENTS_NOTIFY_ANY ||
+		notifyLevel == COMMENTS_NOTIFY_ROOT ||
+		notifyLevel == COMMENTS_NOTIFY_NEVER
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user_access_token.go b/vendor/github.com/mattermost/mattermost-server/model/user_access_token.go
new file mode 100644
index 00000000..bffd9fcb
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/user_access_token.go
@@ -0,0 +1,65 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+type UserAccessToken struct {
+	Id          string `json:"id"`
+	Token       string `json:"token,omitempty"`
+	UserId      string `json:"user_id"`
+	Description string `json:"description"`
+	IsActive    bool   `json:"is_active"`
+}
+
+func (t *UserAccessToken) IsValid() *AppError {
+	if len(t.Id) != 26 {
+		return NewAppError("UserAccessToken.IsValid", "model.user_access_token.is_valid.id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(t.Token) != 26 {
+		return NewAppError("UserAccessToken.IsValid", "model.user_access_token.is_valid.token.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(t.UserId) != 26 {
+		return NewAppError("UserAccessToken.IsValid", "model.user_access_token.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	if len(t.Description) > 255 {
+		return NewAppError("UserAccessToken.IsValid", "model.user_access_token.is_valid.description.app_error", nil, "", http.StatusBadRequest)
+	}
+
+	return nil
+}
+
+func (t *UserAccessToken) PreSave() {
+	t.Id = NewId()
+	t.IsActive = true
+}
+
+func (t *UserAccessToken) ToJson() string {
+	b, _ := json.Marshal(t)
+	return string(b)
+}
+
+func UserAccessTokenFromJson(data io.Reader) *UserAccessToken {
+	var t *UserAccessToken
+	json.NewDecoder(data).Decode(&t)
+	return t
+}
+
+func UserAccessTokenListToJson(t []*UserAccessToken) string {
+	b, _ := json.Marshal(t)
+	return string(b)
+}
+
+func UserAccessTokenListFromJson(data io.Reader) []*UserAccessToken {
+	var t []*UserAccessToken
+	json.NewDecoder(data).Decode(&t)
+	return t
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user_access_token_search.go b/vendor/github.com/mattermost/mattermost-server/model/user_access_token_search.go
new file mode 100644
index 00000000..1b0146ed
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/user_access_token_search.go
@@ -0,0 +1,35 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type UserAccessTokenSearch struct {
+	Term string `json:"term"`
+}
+
+// ToJson convert a UserAccessTokenSearch to json string
+func (c *UserAccessTokenSearch) ToJson() string {
+	b, err := json.Marshal(c)
+	if err != nil {
+		return ""
+	}
+
+	return string(b)
+}
+
+// UserAccessTokenSearchJson decodes the input and returns a UserAccessTokenSearch
+func UserAccessTokenSearchFromJson(data io.Reader) *UserAccessTokenSearch {
+	decoder := json.NewDecoder(data)
+	var cs UserAccessTokenSearch
+	err := decoder.Decode(&cs)
+	if err == nil {
+		return &cs
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user_autocomplete.go b/vendor/github.com/mattermost/mattermost-server/model/user_autocomplete.go
new file mode 100644
index 00000000..b5edb45b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/user_autocomplete.go
@@ -0,0 +1,61 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type UserAutocompleteInChannel struct {
+	InChannel    []*User `json:"in_channel"`
+	OutOfChannel []*User `json:"out_of_channel"`
+}
+
+type UserAutocompleteInTeam struct {
+	InTeam []*User `json:"in_team"`
+}
+
+type UserAutocomplete struct {
+	Users        []*User `json:"users"`
+	OutOfChannel []*User `json:"out_of_channel,omitempty"`
+}
+
+func (o *UserAutocomplete) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func UserAutocompleteFromJson(data io.Reader) *UserAutocomplete {
+	decoder := json.NewDecoder(data)
+	autocomplete := new(UserAutocomplete)
+	err := decoder.Decode(&autocomplete)
+	if err == nil {
+		return autocomplete
+	} else {
+		return nil
+	}
+}
+
+func (o *UserAutocompleteInChannel) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func UserAutocompleteInChannelFromJson(data io.Reader) *UserAutocompleteInChannel {
+	var o *UserAutocompleteInChannel
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *UserAutocompleteInTeam) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func UserAutocompleteInTeamFromJson(data io.Reader) *UserAutocompleteInTeam {
+	var o *UserAutocompleteInTeam
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user_search.go b/vendor/github.com/mattermost/mattermost-server/model/user_search.go
new file mode 100644
index 00000000..94596bdc
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/user_search.go
@@ -0,0 +1,32 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type UserSearch struct {
+	Term           string `json:"term"`
+	TeamId         string `json:"team_id"`
+	NotInTeamId    string `json:"not_in_team_id"`
+	InChannelId    string `json:"in_channel_id"`
+	NotInChannelId string `json:"not_in_channel_id"`
+	AllowInactive  bool   `json:"allow_inactive"`
+	WithoutTeam    bool   `json:"without_team"`
+}
+
+// ToJson convert a User to a json string
+func (u *UserSearch) ToJson() string {
+	b, _ := json.Marshal(u)
+	return string(b)
+}
+
+// UserSearchFromJson will decode the input and return a User
+func UserSearchFromJson(data io.Reader) *UserSearch {
+	var us *UserSearch
+	json.NewDecoder(data).Decode(&us)
+	return us
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/utils.go b/vendor/github.com/mattermost/mattermost-server/model/utils.go
new file mode 100644
index 00000000..331a1aaa
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/utils.go
@@ -0,0 +1,486 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/base32"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/mail"
+	"net/url"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+
+	goi18n "github.com/nicksnyder/go-i18n/i18n"
+	"github.com/pborman/uuid"
+)
+
+const (
+	LOWERCASE_LETTERS = "abcdefghijklmnopqrstuvwxyz"
+	UPPERCASE_LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	NUMBERS           = "0123456789"
+	SYMBOLS           = " !\"\\#$%&'()*+,-./:;<=>?@[]^_`|~"
+)
+
+type StringInterface map[string]interface{}
+type StringMap map[string]string
+type StringArray []string
+
+var translateFunc goi18n.TranslateFunc = nil
+
+func AppErrorInit(t goi18n.TranslateFunc) {
+	translateFunc = t
+}
+
+type AppError struct {
+	Id            string `json:"id"`
+	Message       string `json:"message"`               // Message to be display to the end user without debugging information
+	DetailedError string `json:"detailed_error"`        // Internal error string to help the developer
+	RequestId     string `json:"request_id,omitempty"`  // The RequestId that's also set in the header
+	StatusCode    int    `json:"status_code,omitempty"` // The http status code
+	Where         string `json:"-"`                     // The function where it happened in the form of Struct.Func
+	IsOAuth       bool   `json:"is_oauth,omitempty"`    // Whether the error is OAuth specific
+	params        map[string]interface{}
+}
+
+func (er *AppError) Error() string {
+	return er.Where + ": " + er.Message + ", " + er.DetailedError
+}
+
+func (er *AppError) Translate(T goi18n.TranslateFunc) {
+	if T == nil {
+		er.Message = er.Id
+		return
+	}
+
+	if er.params == nil {
+		er.Message = T(er.Id)
+	} else {
+		er.Message = T(er.Id, er.params)
+	}
+}
+
+func (er *AppError) SystemMessage(T goi18n.TranslateFunc) string {
+	if er.params == nil {
+		return T(er.Id)
+	} else {
+		return T(er.Id, er.params)
+	}
+}
+
+func (er *AppError) ToJson() string {
+	b, _ := json.Marshal(er)
+	return string(b)
+}
+
+// AppErrorFromJson will decode the input and return an AppError
+func AppErrorFromJson(data io.Reader) *AppError {
+	str := ""
+	bytes, rerr := ioutil.ReadAll(data)
+	if rerr != nil {
+		str = rerr.Error()
+	} else {
+		str = string(bytes)
+	}
+
+	decoder := json.NewDecoder(strings.NewReader(str))
+	var er AppError
+	err := decoder.Decode(&er)
+	if err == nil {
+		return &er
+	} else {
+		return NewAppError("AppErrorFromJson", "model.utils.decode_json.app_error", nil, "body: "+str, http.StatusInternalServerError)
+	}
+}
+
+func NewAppError(where string, id string, params map[string]interface{}, details string, status int) *AppError {
+	ap := &AppError{}
+	ap.Id = id
+	ap.params = params
+	ap.Message = id
+	ap.Where = where
+	ap.DetailedError = details
+	ap.StatusCode = status
+	ap.IsOAuth = false
+	ap.Translate(translateFunc)
+	return ap
+}
+
+var encoding = base32.NewEncoding("ybndrfg8ejkmcpqxot1uwisza345h769")
+
+// NewId is a globally unique identifier.  It is a [A-Z0-9] string 26
+// characters long.  It is a UUID version 4 Guid that is zbased32 encoded
+// with the padding stripped off.
+func NewId() string {
+	var b bytes.Buffer
+	encoder := base32.NewEncoder(encoding, &b)
+	encoder.Write(uuid.NewRandom())
+	encoder.Close()
+	b.Truncate(26) // removes the '==' padding
+	return b.String()
+}
+
+func NewRandomString(length int) string {
+	var b bytes.Buffer
+	str := make([]byte, length+8)
+	rand.Read(str)
+	encoder := base32.NewEncoder(encoding, &b)
+	encoder.Write(str)
+	encoder.Close()
+	b.Truncate(length) // removes the '==' padding
+	return b.String()
+}
+
+// GetMillis is a convience method to get milliseconds since epoch.
+func GetMillis() int64 {
+	return time.Now().UnixNano() / int64(time.Millisecond)
+}
+
+// MapToJson converts a map to a json string
+func MapToJson(objmap map[string]string) string {
+	b, _ := json.Marshal(objmap)
+	return string(b)
+}
+
+// MapToJson converts a map to a json string
+func MapBoolToJson(objmap map[string]bool) string {
+	b, _ := json.Marshal(objmap)
+	return string(b)
+}
+
+// MapFromJson will decode the key/value pair map
+func MapFromJson(data io.Reader) map[string]string {
+	decoder := json.NewDecoder(data)
+
+	var objmap map[string]string
+	if err := decoder.Decode(&objmap); err != nil {
+		return make(map[string]string)
+	} else {
+		return objmap
+	}
+}
+
+// MapFromJson will decode the key/value pair map
+func MapBoolFromJson(data io.Reader) map[string]bool {
+	decoder := json.NewDecoder(data)
+
+	var objmap map[string]bool
+	if err := decoder.Decode(&objmap); err != nil {
+		return make(map[string]bool)
+	} else {
+		return objmap
+	}
+}
+
+func ArrayToJson(objmap []string) string {
+	b, _ := json.Marshal(objmap)
+	return string(b)
+}
+
+func ArrayFromJson(data io.Reader) []string {
+	decoder := json.NewDecoder(data)
+
+	var objmap []string
+	if err := decoder.Decode(&objmap); err != nil {
+		return make([]string, 0)
+	} else {
+		return objmap
+	}
+}
+
+func ArrayFromInterface(data interface{}) []string {
+	stringArray := []string{}
+
+	dataArray, ok := data.([]interface{})
+	if !ok {
+		return stringArray
+	}
+
+	for _, v := range dataArray {
+		if str, ok := v.(string); ok {
+			stringArray = append(stringArray, str)
+		}
+	}
+
+	return stringArray
+}
+
+func StringInterfaceToJson(objmap map[string]interface{}) string {
+	b, _ := json.Marshal(objmap)
+	return string(b)
+}
+
+func StringInterfaceFromJson(data io.Reader) map[string]interface{} {
+	decoder := json.NewDecoder(data)
+
+	var objmap map[string]interface{}
+	if err := decoder.Decode(&objmap); err != nil {
+		return make(map[string]interface{})
+	} else {
+		return objmap
+	}
+}
+
+func StringToJson(s string) string {
+	b, _ := json.Marshal(s)
+	return string(b)
+}
+
+func StringFromJson(data io.Reader) string {
+	decoder := json.NewDecoder(data)
+
+	var s string
+	if err := decoder.Decode(&s); err != nil {
+		return ""
+	} else {
+		return s
+	}
+}
+
+func GetServerIpAddress() string {
+	if addrs, err := net.InterfaceAddrs(); err != nil {
+		return ""
+	} else {
+		for _, addr := range addrs {
+
+			if ip, ok := addr.(*net.IPNet); ok && !ip.IP.IsLoopback() {
+				if ip.IP.To4() != nil {
+					return ip.IP.String()
+				}
+			}
+		}
+	}
+
+	return ""
+}
+
+func IsLower(s string) bool {
+	return strings.ToLower(s) == s
+}
+
+func IsValidEmail(email string) bool {
+
+	if !IsLower(email) {
+		return false
+	}
+
+	if _, err := mail.ParseAddress(email); err == nil {
+		return true
+	}
+
+	return false
+}
+
+var reservedName = []string{
+	"signup",
+	"login",
+	"admin",
+	"channel",
+	"post",
+	"api",
+	"oauth",
+}
+
+func IsValidChannelIdentifier(s string) bool {
+
+	if !IsValidAlphaNumHyphenUnderscore(s, true) {
+		return false
+	}
+
+	if len(s) < CHANNEL_NAME_MIN_LENGTH {
+		return false
+	}
+
+	return true
+}
+
+func IsValidAlphaNum(s string) bool {
+	validAlphaNum := regexp.MustCompile(`^[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+$`)
+
+	return validAlphaNum.MatchString(s)
+}
+
+func IsValidAlphaNumHyphenUnderscore(s string, withFormat bool) bool {
+	if withFormat {
+		validAlphaNumHyphenUnderscore := regexp.MustCompile(`^[a-z0-9]+([a-z\-\_0-9]+|(__)?)[a-z0-9]+$`)
+		return validAlphaNumHyphenUnderscore.MatchString(s)
+	}
+
+	validSimpleAlphaNumHyphenUnderscore := regexp.MustCompile(`^[a-zA-Z0-9\-_]+$`)
+	return validSimpleAlphaNumHyphenUnderscore.MatchString(s)
+}
+
+func Etag(parts ...interface{}) string {
+
+	etag := CurrentVersion
+
+	for _, part := range parts {
+		etag += fmt.Sprintf(".%v", part)
+	}
+
+	return etag
+}
+
+var validHashtag = regexp.MustCompile(`^(#\pL[\pL\d\-_.]*[\pL\d])$`)
+var puncStart = regexp.MustCompile(`^[^\pL\d\s#]+`)
+var hashtagStart = regexp.MustCompile(`^#{2,}`)
+var puncEnd = regexp.MustCompile(`[^\pL\d\s]+$`)
+
+func ParseHashtags(text string) (string, string) {
+	words := strings.Fields(text)
+
+	hashtagString := ""
+	plainString := ""
+	for _, word := range words {
+		// trim off surrounding punctuation
+		word = puncStart.ReplaceAllString(word, "")
+		word = puncEnd.ReplaceAllString(word, "")
+
+		// and remove extra pound #s
+		word = hashtagStart.ReplaceAllString(word, "#")
+
+		if validHashtag.MatchString(word) {
+			hashtagString += " " + word
+		} else {
+			plainString += " " + word
+		}
+	}
+
+	if len(hashtagString) > 1000 {
+		hashtagString = hashtagString[:999]
+		lastSpace := strings.LastIndex(hashtagString, " ")
+		if lastSpace > -1 {
+			hashtagString = hashtagString[:lastSpace]
+		} else {
+			hashtagString = ""
+		}
+	}
+
+	return strings.TrimSpace(hashtagString), strings.TrimSpace(plainString)
+}
+
+func IsFileExtImage(ext string) bool {
+	ext = strings.ToLower(ext)
+	for _, imgExt := range IMAGE_EXTENSIONS {
+		if ext == imgExt {
+			return true
+		}
+	}
+	return false
+}
+
+func GetImageMimeType(ext string) string {
+	ext = strings.ToLower(ext)
+	if len(IMAGE_MIME_TYPES[ext]) == 0 {
+		return "image"
+	} else {
+		return IMAGE_MIME_TYPES[ext]
+	}
+}
+
+func ClearMentionTags(post string) string {
+	post = strings.Replace(post, "<mention>", "", -1)
+	post = strings.Replace(post, "</mention>", "", -1)
+	return post
+}
+
+var UrlRegex = regexp.MustCompile(`^((?:[a-z]+:\/\/)?(?:(?:[a-z0-9\-]+\.)+(?:[a-z]{2}|aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|local|internal))(:[0-9]{1,5})?(?:\/[a-z0-9_\-\.~]+)*(\/([a-z0-9_\-\.]*)(?:\?[a-z0-9+_~\-\.%=&amp;]*)?)?(?:#[a-zA-Z0-9!$&'()*+.=-_~:@/?]*)?)(?:\s+|$)$`)
+var PartialUrlRegex = regexp.MustCompile(`/([A-Za-z0-9]{26})/([A-Za-z0-9]{26})/((?:[A-Za-z0-9]{26})?.+(?:\.[A-Za-z0-9]{3,})?)`)
+
+func IsValidHttpUrl(rawUrl string) bool {
+	if strings.Index(rawUrl, "http://") != 0 && strings.Index(rawUrl, "https://") != 0 {
+		return false
+	}
+
+	if _, err := url.ParseRequestURI(rawUrl); err != nil {
+		return false
+	}
+
+	return true
+}
+
+func IsValidHttpsUrl(rawUrl string) bool {
+	if strings.Index(rawUrl, "https://") != 0 {
+		return false
+	}
+
+	if _, err := url.ParseRequestURI(rawUrl); err != nil {
+		return false
+	}
+
+	return true
+}
+
+func IsValidTurnOrStunServer(rawUri string) bool {
+	if strings.Index(rawUri, "turn:") != 0 && strings.Index(rawUri, "stun:") != 0 {
+		return false
+	}
+
+	if _, err := url.ParseRequestURI(rawUri); err != nil {
+		return false
+	}
+
+	return true
+}
+
+func IsSafeLink(link *string) bool {
+	if link != nil {
+		if IsValidHttpUrl(*link) {
+			return true
+		} else if strings.HasPrefix(*link, "/") {
+			return true
+		} else {
+			return false
+		}
+	}
+
+	return true
+}
+
+func IsValidWebsocketUrl(rawUrl string) bool {
+	if strings.Index(rawUrl, "ws://") != 0 && strings.Index(rawUrl, "wss://") != 0 {
+		return false
+	}
+
+	if _, err := url.ParseRequestURI(rawUrl); err != nil {
+		return false
+	}
+
+	return true
+}
+
+func IsValidTrueOrFalseString(value string) bool {
+	return value == "true" || value == "false"
+}
+
+func IsValidNumberString(value string) bool {
+	if _, err := strconv.Atoi(value); err != nil {
+		return false
+	}
+
+	return true
+}
+
+func IsValidId(value string) bool {
+	if len(value) != 26 {
+		return false
+	}
+
+	for _, r := range value {
+		if !unicode.IsLetter(r) && !unicode.IsNumber(r) {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/version.go b/vendor/github.com/mattermost/mattermost-server/model/version.go
new file mode 100644
index 00000000..1bd7baec
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/version.go
@@ -0,0 +1,148 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// This is a list of all the current viersions including any patches.
+// It should be maitained in chronological order with most current
+// release at the front of the list.
+var versions = []string{
+	"4.7.0",
+	"4.6.0",
+	"4.5.0",
+	"4.4.0",
+	"4.3.0",
+	"4.2.0",
+	"4.1.0",
+	"4.0.0",
+	"3.10.0",
+	"3.9.0",
+	"3.8.0",
+	"3.7.0",
+	"3.6.0",
+	"3.5.0",
+	"3.4.0",
+	"3.3.0",
+	"3.2.0",
+	"3.1.0",
+	"3.0.0",
+	"2.2.0",
+	"2.1.0",
+	"2.0.0",
+	"1.4.0",
+	"1.3.0",
+	"1.2.1",
+	"1.2.0",
+	"1.1.0",
+	"1.0.0",
+	"0.7.1",
+	"0.7.0",
+	"0.6.0",
+	"0.5.0",
+}
+
+var CurrentVersion string = versions[0]
+var BuildNumber string
+var BuildDate string
+var BuildHash string
+var BuildHashEnterprise string
+var BuildEnterpriseReady string
+var versionsWithoutHotFixes []string
+
+func init() {
+	versionsWithoutHotFixes = make([]string, 0, len(versions))
+	seen := make(map[string]string)
+
+	for _, version := range versions {
+		maj, min, _ := SplitVersion(version)
+		verStr := fmt.Sprintf("%v.%v.0", maj, min)
+
+		if seen[verStr] == "" {
+			versionsWithoutHotFixes = append(versionsWithoutHotFixes, verStr)
+			seen[verStr] = verStr
+		}
+	}
+}
+
+func SplitVersion(version string) (int64, int64, int64) {
+	parts := strings.Split(version, ".")
+
+	major := int64(0)
+	minor := int64(0)
+	patch := int64(0)
+
+	if len(parts) > 0 {
+		major, _ = strconv.ParseInt(parts[0], 10, 64)
+	}
+
+	if len(parts) > 1 {
+		minor, _ = strconv.ParseInt(parts[1], 10, 64)
+	}
+
+	if len(parts) > 2 {
+		patch, _ = strconv.ParseInt(parts[2], 10, 64)
+	}
+
+	return major, minor, patch
+}
+
+func GetPreviousVersion(version string) string {
+	verMajor, verMinor, _ := SplitVersion(version)
+	verStr := fmt.Sprintf("%v.%v.0", verMajor, verMinor)
+
+	for index, v := range versionsWithoutHotFixes {
+		if v == verStr && len(versionsWithoutHotFixes) > index+1 {
+			return versionsWithoutHotFixes[index+1]
+		}
+	}
+
+	return ""
+}
+
+func IsOfficalBuild() bool {
+	return BuildNumber != "_BUILD_NUMBER_"
+}
+
+func IsCurrentVersion(versionToCheck string) bool {
+	currentMajor, currentMinor, _ := SplitVersion(CurrentVersion)
+	toCheckMajor, toCheckMinor, _ := SplitVersion(versionToCheck)
+
+	if toCheckMajor == currentMajor && toCheckMinor == currentMinor {
+		return true
+	} else {
+		return false
+	}
+}
+
+func IsPreviousVersionsSupported(versionToCheck string) bool {
+	toCheckMajor, toCheckMinor, _ := SplitVersion(versionToCheck)
+	versionToCheckStr := fmt.Sprintf("%v.%v.0", toCheckMajor, toCheckMinor)
+
+	// Current Supported
+	if versionsWithoutHotFixes[0] == versionToCheckStr {
+		return true
+	}
+
+	// Current - 1 Supported
+	if versionsWithoutHotFixes[1] == versionToCheckStr {
+		return true
+	}
+
+	// Current - 2 Supported
+	if versionsWithoutHotFixes[2] == versionToCheckStr {
+		return true
+	}
+
+	// Current - 3 Supported
+	if versionsWithoutHotFixes[3] == versionToCheckStr {
+		return true
+	}
+
+	return false
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/webrtc.go b/vendor/github.com/mattermost/mattermost-server/model/webrtc.go
new file mode 100644
index 00000000..59797a5b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/webrtc.go
@@ -0,0 +1,39 @@
+// Copyright (c) 2017 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type WebrtcInfoResponse struct {
+	Token        string `json:"token"`
+	GatewayUrl   string `json:"gateway_url"`
+	StunUri      string `json:"stun_uri,omitempty"`
+	TurnUri      string `json:"turn_uri,omitempty"`
+	TurnPassword string `json:"turn_password,omitempty"`
+	TurnUsername string `json:"turn_username,omitempty"`
+}
+
+type GatewayResponse struct {
+	Status string `json:"janus"`
+}
+
+func GatewayResponseFromJson(data io.Reader) *GatewayResponse {
+	var o *GatewayResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+func (o *WebrtcInfoResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func WebrtcInfoResponseFromJson(data io.Reader) *WebrtcInfoResponse {
+	var o *WebrtcInfoResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/websocket_client.go b/vendor/github.com/mattermost/mattermost-server/model/websocket_client.go
new file mode 100644
index 00000000..e5c44dde
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/websocket_client.go
@@ -0,0 +1,167 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/gorilla/websocket"
+)
+
+const (
+	SOCKET_MAX_MESSAGE_SIZE_KB = 8 * 1024 // 8KB
+)
+
+type WebSocketClient struct {
+	Url             string          // The location of the server like "ws://localhost:8065"
+	ApiUrl          string          // The api location of the server like "ws://localhost:8065/api/v3"
+	ConnectUrl      string          // The websocket URL to connect to like "ws://localhost:8065/api/v3/path/to/websocket"
+	Conn            *websocket.Conn // The WebSocket connection
+	AuthToken       string          // The token used to open the WebSocket
+	Sequence        int64           // The ever-incrementing sequence attached to each WebSocket action
+	EventChannel    chan *WebSocketEvent
+	ResponseChannel chan *WebSocketResponse
+	ListenError     *AppError
+}
+
+// NewWebSocketClient constructs a new WebSocket client with convienence
+// methods for talking to the server.
+func NewWebSocketClient(url, authToken string) (*WebSocketClient, *AppError) {
+	conn, _, err := websocket.DefaultDialer.Dial(url+API_URL_SUFFIX_V3+"/users/websocket", nil)
+	if err != nil {
+		return nil, NewAppError("NewWebSocketClient", "model.websocket_client.connect_fail.app_error", nil, err.Error(), http.StatusInternalServerError)
+	}
+
+	client := &WebSocketClient{
+		url,
+		url + API_URL_SUFFIX_V3,
+		url + API_URL_SUFFIX_V3 + "/users/websocket",
+		conn,
+		authToken,
+		1,
+		make(chan *WebSocketEvent, 100),
+		make(chan *WebSocketResponse, 100),
+		nil,
+	}
+
+	client.SendMessage(WEBSOCKET_AUTHENTICATION_CHALLENGE, map[string]interface{}{"token": authToken})
+
+	return client, nil
+}
+
+// NewWebSocketClient4 constructs a new WebSocket client with convienence
+// methods for talking to the server. Uses the v4 endpoint.
+func NewWebSocketClient4(url, authToken string) (*WebSocketClient, *AppError) {
+	conn, _, err := websocket.DefaultDialer.Dial(url+API_URL_SUFFIX+"/websocket", nil)
+	if err != nil {
+		return nil, NewAppError("NewWebSocketClient4", "model.websocket_client.connect_fail.app_error", nil, err.Error(), http.StatusInternalServerError)
+	}
+
+	client := &WebSocketClient{
+		url,
+		url + API_URL_SUFFIX,
+		url + API_URL_SUFFIX + "/websocket",
+		conn,
+		authToken,
+		1,
+		make(chan *WebSocketEvent, 100),
+		make(chan *WebSocketResponse, 100),
+		nil,
+	}
+
+	client.SendMessage(WEBSOCKET_AUTHENTICATION_CHALLENGE, map[string]interface{}{"token": authToken})
+
+	return client, nil
+}
+
+func (wsc *WebSocketClient) Connect() *AppError {
+	var err error
+	wsc.Conn, _, err = websocket.DefaultDialer.Dial(wsc.ConnectUrl, nil)
+	if err != nil {
+		return NewAppError("Connect", "model.websocket_client.connect_fail.app_error", nil, err.Error(), http.StatusInternalServerError)
+	}
+
+	wsc.EventChannel = make(chan *WebSocketEvent, 100)
+	wsc.ResponseChannel = make(chan *WebSocketResponse, 100)
+
+	wsc.SendMessage(WEBSOCKET_AUTHENTICATION_CHALLENGE, map[string]interface{}{"token": wsc.AuthToken})
+
+	return nil
+}
+
+func (wsc *WebSocketClient) Close() {
+	wsc.Conn.Close()
+}
+
+func (wsc *WebSocketClient) Listen() {
+	go func() {
+		defer func() {
+			wsc.Conn.Close()
+			close(wsc.EventChannel)
+			close(wsc.ResponseChannel)
+		}()
+
+		for {
+			var rawMsg json.RawMessage
+			var err error
+			if _, rawMsg, err = wsc.Conn.ReadMessage(); err != nil {
+				if !websocket.IsCloseError(err, websocket.CloseNormalClosure, websocket.CloseNoStatusReceived) {
+					wsc.ListenError = NewAppError("NewWebSocketClient", "model.websocket_client.connect_fail.app_error", nil, err.Error(), http.StatusInternalServerError)
+				}
+
+				return
+			}
+
+			var event WebSocketEvent
+			if err := json.Unmarshal(rawMsg, &event); err == nil && event.IsValid() {
+				wsc.EventChannel <- &event
+				continue
+			}
+
+			var response WebSocketResponse
+			if err := json.Unmarshal(rawMsg, &response); err == nil && response.IsValid() {
+				wsc.ResponseChannel <- &response
+				continue
+			}
+
+		}
+	}()
+}
+
+func (wsc *WebSocketClient) SendMessage(action string, data map[string]interface{}) {
+	req := &WebSocketRequest{}
+	req.Seq = wsc.Sequence
+	req.Action = action
+	req.Data = data
+
+	wsc.Sequence++
+
+	wsc.Conn.WriteJSON(req)
+}
+
+// UserTyping will push a user_typing event out to all connected users
+// who are in the specified channel
+func (wsc *WebSocketClient) UserTyping(channelId, parentId string) {
+	data := map[string]interface{}{
+		"channel_id": channelId,
+		"parent_id":  parentId,
+	}
+
+	wsc.SendMessage("user_typing", data)
+}
+
+// GetStatuses will return a map of string statuses using user id as the key
+func (wsc *WebSocketClient) GetStatuses() {
+	wsc.SendMessage("get_statuses", nil)
+}
+
+// GetStatusesByIds will fetch certain user statuses based on ids and return
+// a map of string statuses using user id as the key
+func (wsc *WebSocketClient) GetStatusesByIds(userIds []string) {
+	data := map[string]interface{}{
+		"user_ids": userIds,
+	}
+	wsc.SendMessage("get_statuses_by_ids", data)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/websocket_message.go b/vendor/github.com/mattermost/mattermost-server/model/websocket_message.go
new file mode 100644
index 00000000..0256e400
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/websocket_message.go
@@ -0,0 +1,132 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+const (
+	WEBSOCKET_EVENT_TYPING              = "typing"
+	WEBSOCKET_EVENT_POSTED              = "posted"
+	WEBSOCKET_EVENT_POST_EDITED         = "post_edited"
+	WEBSOCKET_EVENT_POST_DELETED        = "post_deleted"
+	WEBSOCKET_EVENT_CHANNEL_DELETED     = "channel_deleted"
+	WEBSOCKET_EVENT_CHANNEL_CREATED     = "channel_created"
+	WEBSOCKET_EVENT_CHANNEL_UPDATED     = "channel_updated"
+	WEBSOCKET_EVENT_DIRECT_ADDED        = "direct_added"
+	WEBSOCKET_EVENT_GROUP_ADDED         = "group_added"
+	WEBSOCKET_EVENT_NEW_USER            = "new_user"
+	WEBSOCKET_EVENT_ADDED_TO_TEAM       = "added_to_team"
+	WEBSOCKET_EVENT_LEAVE_TEAM          = "leave_team"
+	WEBSOCKET_EVENT_UPDATE_TEAM         = "update_team"
+	WEBSOCKET_EVENT_DELETE_TEAM         = "delete_team"
+	WEBSOCKET_EVENT_USER_ADDED          = "user_added"
+	WEBSOCKET_EVENT_USER_UPDATED        = "user_updated"
+	WEBSOCKET_EVENT_USER_ROLE_UPDATED   = "user_role_updated"
+	WEBSOCKET_EVENT_MEMBERROLE_UPDATED  = "memberrole_updated"
+	WEBSOCKET_EVENT_USER_REMOVED        = "user_removed"
+	WEBSOCKET_EVENT_PREFERENCE_CHANGED  = "preference_changed"
+	WEBSOCKET_EVENT_PREFERENCES_CHANGED = "preferences_changed"
+	WEBSOCKET_EVENT_PREFERENCES_DELETED = "preferences_deleted"
+	WEBSOCKET_EVENT_EPHEMERAL_MESSAGE   = "ephemeral_message"
+	WEBSOCKET_EVENT_STATUS_CHANGE       = "status_change"
+	WEBSOCKET_EVENT_HELLO               = "hello"
+	WEBSOCKET_EVENT_WEBRTC              = "webrtc"
+	WEBSOCKET_AUTHENTICATION_CHALLENGE  = "authentication_challenge"
+	WEBSOCKET_EVENT_REACTION_ADDED      = "reaction_added"
+	WEBSOCKET_EVENT_REACTION_REMOVED    = "reaction_removed"
+	WEBSOCKET_EVENT_RESPONSE            = "response"
+	WEBSOCKET_EVENT_EMOJI_ADDED         = "emoji_added"
+	WEBSOCKET_EVENT_CHANNEL_VIEWED      = "channel_viewed"
+	WEBSOCKET_EVENT_PLUGIN_ACTIVATED    = "plugin_activated"   // EXPERIMENTAL - SUBJECT TO CHANGE
+	WEBSOCKET_EVENT_PLUGIN_DEACTIVATED  = "plugin_deactivated" // EXPERIMENTAL - SUBJECT TO CHANGE
+)
+
+type WebSocketMessage interface {
+	ToJson() string
+	IsValid() bool
+	EventType() string
+}
+
+type WebsocketBroadcast struct {
+	OmitUsers map[string]bool `json:"omit_users"` // broadcast is omitted for users listed here
+	UserId    string          `json:"user_id"`    // broadcast only occurs for this user
+	ChannelId string          `json:"channel_id"` // broadcast only occurs for users in this channel
+	TeamId    string          `json:"team_id"`    // broadcast only occurs for users in this team
+}
+
+type WebSocketEvent struct {
+	Event     string                 `json:"event"`
+	Data      map[string]interface{} `json:"data"`
+	Broadcast *WebsocketBroadcast    `json:"broadcast"`
+	Sequence  int64                  `json:"seq"`
+}
+
+func (m *WebSocketEvent) Add(key string, value interface{}) {
+	m.Data[key] = value
+}
+
+func NewWebSocketEvent(event, teamId, channelId, userId string, omitUsers map[string]bool) *WebSocketEvent {
+	return &WebSocketEvent{Event: event, Data: make(map[string]interface{}),
+		Broadcast: &WebsocketBroadcast{TeamId: teamId, ChannelId: channelId, UserId: userId, OmitUsers: omitUsers}}
+}
+
+func (o *WebSocketEvent) IsValid() bool {
+	return o.Event != ""
+}
+
+func (o *WebSocketEvent) EventType() string {
+	return o.Event
+}
+
+func (o *WebSocketEvent) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func WebSocketEventFromJson(data io.Reader) *WebSocketEvent {
+	var o *WebSocketEvent
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
+
+type WebSocketResponse struct {
+	Status   string                 `json:"status"`
+	SeqReply int64                  `json:"seq_reply,omitempty"`
+	Data     map[string]interface{} `json:"data,omitempty"`
+	Error    *AppError              `json:"error,omitempty"`
+}
+
+func (m *WebSocketResponse) Add(key string, value interface{}) {
+	m.Data[key] = value
+}
+
+func NewWebSocketResponse(status string, seqReply int64, data map[string]interface{}) *WebSocketResponse {
+	return &WebSocketResponse{Status: status, SeqReply: seqReply, Data: data}
+}
+
+func NewWebSocketError(seqReply int64, err *AppError) *WebSocketResponse {
+	return &WebSocketResponse{Status: STATUS_FAIL, SeqReply: seqReply, Error: err}
+}
+
+func (o *WebSocketResponse) IsValid() bool {
+	return o.Status != ""
+}
+
+func (o *WebSocketResponse) EventType() string {
+	return WEBSOCKET_EVENT_RESPONSE
+}
+
+func (o *WebSocketResponse) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func WebSocketResponseFromJson(data io.Reader) *WebSocketResponse {
+	var o *WebSocketResponse
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/model/websocket_request.go b/vendor/github.com/mattermost/mattermost-server/model/websocket_request.go
new file mode 100644
index 00000000..4da626e2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/model/websocket_request.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+
+	goi18n "github.com/nicksnyder/go-i18n/i18n"
+)
+
+type WebSocketRequest struct {
+	// Client-provided fields
+	Seq    int64                  `json:"seq"`
+	Action string                 `json:"action"`
+	Data   map[string]interface{} `json:"data"`
+
+	// Server-provided fields
+	Session Session              `json:"-"`
+	T       goi18n.TranslateFunc `json:"-"`
+	Locale  string               `json:"-"`
+}
+
+func (o *WebSocketRequest) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func WebSocketRequestFromJson(data io.Reader) *WebSocketRequest {
+	var o *WebSocketRequest
+	json.NewDecoder(data).Decode(&o)
+	return o
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
+You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
+You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
+webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
+
+We promise that we will not enforce the copyleft provisions in AGPL v3.0 against you if your application (a) does not
+link to the Mattermost Platform directly, but exclusively uses the Mattermost Admin Tools and Configuration Files, and
+(b) you have not modified, added to or adapted the source code of Mattermost in a way that results in the creation of
+a “modified version” or “work based on” Mattermost as these terms are defined in the AGPL v3.0 license.
+
+MATTERMOST TRADEMARK GUIDELINES
+
+Your use of the mark Mattermost is subject to Mattermost, Inc's prior written approval and our organization’s Trademark
+Standards of Use at http://www.mattermost.org/trademark-standards-of-use/. For trademark approval or any questions
+you have about using these trademarks, please email trademark@mattermost.com
+
+------------------------------------------------------------------------------------------------------------------------------
+
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+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      "License" shall mean the terms and conditions for use, reproduction,
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      "Contribution" shall mean any work of authorship, including
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+      to the Licensor or its representatives, including but not limited to
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+          notices within Derivative Works that You distribute, alongside
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
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+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+       http://www.apache.org/licenses/LICENSE-2.0
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+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
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+------------------------------------------------------------------------------
+
+The software is released under the terms of the GNU Affero General Public
+License, version 3.
+
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
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+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
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+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
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+
+  "Additional permissions" are terms that supplement the terms of this
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+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
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+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
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+
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+received it, or any part of it, contains a notice stating that it is
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+  Additional terms, permissive or non-permissive, may be stated in the
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+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
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+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
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+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
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+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
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+but do not include claims that would be infringed only as a
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+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
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+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
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+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
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+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
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+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
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+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
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+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
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+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
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+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
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+Program specifies that a certain numbered version of the GNU Affero General
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+Foundation.  If the Program does not specify a version number of the
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+
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+versions of the GNU Affero General Public License can be used, that proxy's
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
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+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/config.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/config.go
new file mode 100644
index 00000000..577c3eb2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/config.go
@@ -0,0 +1,288 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"encoding/xml"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type xmlProperty struct {
+	Name  string `xml:"name,attr"`
+	Value string `xml:",chardata"`
+}
+
+type xmlFilter struct {
+	Enabled  string        `xml:"enabled,attr"`
+	Tag      string        `xml:"tag"`
+	Level    string        `xml:"level"`
+	Type     string        `xml:"type"`
+	Property []xmlProperty `xml:"property"`
+}
+
+type xmlLoggerConfig struct {
+	Filter []xmlFilter `xml:"filter"`
+}
+
+// Load XML configuration; see examples/example.xml for documentation
+func (log Logger) LoadConfiguration(filename string) {
+	log.Close()
+
+	// Open the configuration file
+	fd, err := os.Open(filename)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Could not open %q for reading: %s\n", filename, err)
+		os.Exit(1)
+	}
+
+	contents, err := ioutil.ReadAll(fd)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Could not read %q: %s\n", filename, err)
+		os.Exit(1)
+	}
+
+	xc := new(xmlLoggerConfig)
+	if err := xml.Unmarshal(contents, xc); err != nil {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Could not parse XML configuration in %q: %s\n", filename, err)
+		os.Exit(1)
+	}
+
+	for _, xmlfilt := range xc.Filter {
+		var filt LogWriter
+		var lvl Level
+		bad, good, enabled := false, true, false
+
+		// Check required children
+		if len(xmlfilt.Enabled) == 0 {
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required attribute %s for filter missing in %s\n", "enabled", filename)
+			bad = true
+		} else {
+			enabled = xmlfilt.Enabled != "false"
+		}
+		if len(xmlfilt.Tag) == 0 {
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required child <%s> for filter missing in %s\n", "tag", filename)
+			bad = true
+		}
+		if len(xmlfilt.Type) == 0 {
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required child <%s> for filter missing in %s\n", "type", filename)
+			bad = true
+		}
+		if len(xmlfilt.Level) == 0 {
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required child <%s> for filter missing in %s\n", "level", filename)
+			bad = true
+		}
+
+		switch xmlfilt.Level {
+		case "FINEST":
+			lvl = FINEST
+		case "FINE":
+			lvl = FINE
+		case "DEBUG":
+			lvl = DEBUG
+		case "TRACE":
+			lvl = TRACE
+		case "INFO":
+			lvl = INFO
+		case "WARNING":
+			lvl = WARNING
+		case "ERROR":
+			lvl = ERROR
+		case "CRITICAL":
+			lvl = CRITICAL
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required child <%s> for filter has unknown value in %s: %s\n", "level", filename, xmlfilt.Level)
+			bad = true
+		}
+
+		// Just so all of the required attributes are errored at the same time if missing
+		if bad {
+			os.Exit(1)
+		}
+
+		switch xmlfilt.Type {
+		case "console":
+			filt, good = xmlToConsoleLogWriter(filename, xmlfilt.Property, enabled)
+		case "file":
+			filt, good = xmlToFileLogWriter(filename, xmlfilt.Property, enabled)
+		case "xml":
+			filt, good = xmlToXMLLogWriter(filename, xmlfilt.Property, enabled)
+		case "socket":
+			filt, good = xmlToSocketLogWriter(filename, xmlfilt.Property, enabled)
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Could not load XML configuration in %s: unknown filter type \"%s\"\n", filename, xmlfilt.Type)
+			os.Exit(1)
+		}
+
+		// Just so all of the required params are errored at the same time if wrong
+		if !good {
+			os.Exit(1)
+		}
+
+		// If we're disabled (syntax and correctness checks only), don't add to logger
+		if !enabled {
+			continue
+		}
+
+		log[xmlfilt.Tag] = &Filter{lvl, filt}
+	}
+}
+
+func xmlToConsoleLogWriter(filename string, props []xmlProperty, enabled bool) (*ConsoleLogWriter, bool) {
+	// Parse properties
+	for _, prop := range props {
+		switch prop.Name {
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Warning: Unknown property \"%s\" for console filter in %s\n", prop.Name, filename)
+		}
+	}
+
+	// If it's disabled, we're just checking syntax
+	if !enabled {
+		return nil, true
+	}
+
+	return NewConsoleLogWriter(), true
+}
+
+// Parse a number with K/M/G suffixes based on thousands (1000) or 2^10 (1024)
+func strToNumSuffix(str string, mult int) int {
+	num := 1
+	if len(str) > 1 {
+		switch str[len(str)-1] {
+		case 'G', 'g':
+			num *= mult
+			fallthrough
+		case 'M', 'm':
+			num *= mult
+			fallthrough
+		case 'K', 'k':
+			num *= mult
+			str = str[0 : len(str)-1]
+		}
+	}
+	parsed, _ := strconv.Atoi(str)
+	return parsed * num
+}
+func xmlToFileLogWriter(filename string, props []xmlProperty, enabled bool) (*FileLogWriter, bool) {
+	file := ""
+	format := "[%D %T] [%L] (%S) %M"
+	maxlines := 0
+	maxsize := 0
+	daily := false
+	rotate := false
+
+	// Parse properties
+	for _, prop := range props {
+		switch prop.Name {
+		case "filename":
+			file = strings.Trim(prop.Value, " \r\n")
+		case "format":
+			format = strings.Trim(prop.Value, " \r\n")
+		case "maxlines":
+			maxlines = strToNumSuffix(strings.Trim(prop.Value, " \r\n"), 1000)
+		case "maxsize":
+			maxsize = strToNumSuffix(strings.Trim(prop.Value, " \r\n"), 1024)
+		case "daily":
+			daily = strings.Trim(prop.Value, " \r\n") != "false"
+		case "rotate":
+			rotate = strings.Trim(prop.Value, " \r\n") != "false"
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Warning: Unknown property \"%s\" for file filter in %s\n", prop.Name, filename)
+		}
+	}
+
+	// Check properties
+	if len(file) == 0 {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required property \"%s\" for file filter missing in %s\n", "filename", filename)
+		return nil, false
+	}
+
+	// If it's disabled, we're just checking syntax
+	if !enabled {
+		return nil, true
+	}
+
+	flw := NewFileLogWriter(file, rotate)
+	flw.SetFormat(format)
+	flw.SetRotateLines(maxlines)
+	flw.SetRotateSize(maxsize)
+	flw.SetRotateDaily(daily)
+	return flw, true
+}
+
+func xmlToXMLLogWriter(filename string, props []xmlProperty, enabled bool) (*FileLogWriter, bool) {
+	file := ""
+	maxrecords := 0
+	maxsize := 0
+	daily := false
+	rotate := false
+
+	// Parse properties
+	for _, prop := range props {
+		switch prop.Name {
+		case "filename":
+			file = strings.Trim(prop.Value, " \r\n")
+		case "maxrecords":
+			maxrecords = strToNumSuffix(strings.Trim(prop.Value, " \r\n"), 1000)
+		case "maxsize":
+			maxsize = strToNumSuffix(strings.Trim(prop.Value, " \r\n"), 1024)
+		case "daily":
+			daily = strings.Trim(prop.Value, " \r\n") != "false"
+		case "rotate":
+			rotate = strings.Trim(prop.Value, " \r\n") != "false"
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Warning: Unknown property \"%s\" for xml filter in %s\n", prop.Name, filename)
+		}
+	}
+
+	// Check properties
+	if len(file) == 0 {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required property \"%s\" for xml filter missing in %s\n", "filename", filename)
+		return nil, false
+	}
+
+	// If it's disabled, we're just checking syntax
+	if !enabled {
+		return nil, true
+	}
+
+	xlw := NewXMLLogWriter(file, rotate)
+	xlw.SetRotateLines(maxrecords)
+	xlw.SetRotateSize(maxsize)
+	xlw.SetRotateDaily(daily)
+	return xlw, true
+}
+
+func xmlToSocketLogWriter(filename string, props []xmlProperty, enabled bool) (SocketLogWriter, bool) {
+	endpoint := ""
+	protocol := "udp"
+
+	// Parse properties
+	for _, prop := range props {
+		switch prop.Name {
+		case "endpoint":
+			endpoint = strings.Trim(prop.Value, " \r\n")
+		case "protocol":
+			protocol = strings.Trim(prop.Value, " \r\n")
+		default:
+			fmt.Fprintf(os.Stderr, "LoadConfiguration: Warning: Unknown property \"%s\" for file filter in %s\n", prop.Name, filename)
+		}
+	}
+
+	// Check properties
+	if len(endpoint) == 0 {
+		fmt.Fprintf(os.Stderr, "LoadConfiguration: Error: Required property \"%s\" for file filter missing in %s\n", "endpoint", filename)
+		return nil, false
+	}
+
+	// If it's disabled, we're just checking syntax
+	if !enabled {
+		return nil, true
+	}
+
+	return NewSocketLogWriter(protocol, endpoint), true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/ConsoleLogWriter_Manual.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/ConsoleLogWriter_Manual.go
new file mode 100644
index 00000000..698dd332
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/ConsoleLogWriter_Manual.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"time"
+)
+
+import l4g "code.google.com/p/log4go"
+
+func main() {
+	log := l4g.NewLogger()
+	defer log.Close()
+	log.AddFilter("stdout", l4g.DEBUG, l4g.NewConsoleLogWriter())
+	log.Info("The time is now: %s", time.Now().Format("15:04:05 MST 2006/01/02"))
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/FileLogWriter_Manual.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/FileLogWriter_Manual.go
new file mode 100644
index 00000000..efd596aa
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/FileLogWriter_Manual.go
@@ -0,0 +1,57 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"time"
+)
+
+import l4g "code.google.com/p/log4go"
+
+const (
+	filename = "flw.log"
+)
+
+func main() {
+	// Get a new logger instance
+	log := l4g.NewLogger()
+
+	// Create a default logger that is logging messages of FINE or higher
+	log.AddFilter("file", l4g.FINE, l4g.NewFileLogWriter(filename, false))
+	log.Close()
+
+	/* Can also specify manually via the following: (these are the defaults) */
+	flw := l4g.NewFileLogWriter(filename, false)
+	flw.SetFormat("[%D %T] [%L] (%S) %M")
+	flw.SetRotate(false)
+	flw.SetRotateSize(0)
+	flw.SetRotateLines(0)
+	flw.SetRotateDaily(false)
+	log.AddFilter("file", l4g.FINE, flw)
+
+	// Log some experimental messages
+	log.Finest("Everything is created now (notice that I will not be printing to the file)")
+	log.Info("The time is now: %s", time.Now().Format("15:04:05 MST 2006/01/02"))
+	log.Critical("Time to close out!")
+
+	// Close the log
+	log.Close()
+
+	// Print what was logged to the file (yes, I know I'm skipping error checking)
+	fd, _ := os.Open(filename)
+	in := bufio.NewReader(fd)
+	fmt.Print("Messages logged to file were: (line numbers not included)\n")
+	for lineno := 1; ; lineno++ {
+		line, err := in.ReadString('\n')
+		if err == io.EOF {
+			break
+		}
+		fmt.Printf("%3d:\t%s", lineno, line)
+	}
+	fd.Close()
+
+	// Remove the file so it's not lying around
+	os.Remove(filename)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SimpleNetLogServer.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SimpleNetLogServer.go
new file mode 100644
index 00000000..83c80ad1
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SimpleNetLogServer.go
@@ -0,0 +1,42 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net"
+	"os"
+)
+
+var (
+	port = flag.String("p", "12124", "Port number to listen on")
+)
+
+func e(err error) {
+	if err != nil {
+		fmt.Printf("Erroring out: %s\n", err)
+		os.Exit(1)
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	// Bind to the port
+	bind, err := net.ResolveUDPAddr("0.0.0.0:" + *port)
+	e(err)
+
+	// Create listener
+	listener, err := net.ListenUDP("udp", bind)
+	e(err)
+
+	fmt.Printf("Listening to port %s...\n", *port)
+	for {
+		// read into a new buffer
+		buffer := make([]byte, 1024)
+		_, _, err := listener.ReadFrom(buffer)
+		e(err)
+
+		// log to standard output
+		fmt.Println(string(buffer))
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SocketLogWriter_Manual.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SocketLogWriter_Manual.go
new file mode 100644
index 00000000..400b698c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/SocketLogWriter_Manual.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"time"
+)
+
+import l4g "code.google.com/p/log4go"
+
+func main() {
+	log := l4g.NewLogger()
+	log.AddFilter("network", l4g.FINEST, l4g.NewSocketLogWriter("udp", "192.168.1.255:12124"))
+
+	// Run `nc -u -l -p 12124` or similar before you run this to see the following message
+	log.Info("The time is now: %s", time.Now().Format("15:04:05 MST 2006/01/02"))
+
+	// This makes sure the output stream buffer is written
+	log.Close()
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/XMLConfigurationExample.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/XMLConfigurationExample.go
new file mode 100644
index 00000000..164c2add
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/examples/XMLConfigurationExample.go
@@ -0,0 +1,13 @@
+package main
+
+import l4g "code.google.com/p/log4go"
+
+func main() {
+	// Load the configuration (isn't this easy?)
+	l4g.LoadConfiguration("example.xml")
+
+	// And now we're ready!
+	l4g.Finest("This will only go to those of you really cool UDP kids!  If you change enabled=true.")
+	l4g.Debug("Oh no!  %d + %d = %d!", 2, 2, 2+2)
+	l4g.Info("About that time, eh chaps?")
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/filelog.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/filelog.go
new file mode 100644
index 00000000..9bc4df15
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/filelog.go
@@ -0,0 +1,264 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+// This log writer sends output to a file
+type FileLogWriter struct {
+	rec chan *LogRecord
+	rot chan bool
+
+	// The opened file
+	filename string
+	file     *os.File
+
+	// The logging format
+	format string
+
+	// File header/trailer
+	header, trailer string
+
+	// Rotate at linecount
+	maxlines          int
+	maxlines_curlines int
+
+	// Rotate at size
+	maxsize         int
+	maxsize_cursize int
+
+	// Rotate daily
+	daily          bool
+	daily_opendate int
+
+	// Keep old logfiles (.001, .002, etc)
+	rotate    bool
+	maxbackup int
+}
+
+// This is the FileLogWriter's output method
+func (w *FileLogWriter) LogWrite(rec *LogRecord) {
+	w.rec <- rec
+}
+
+func (w *FileLogWriter) Close() {
+	close(w.rec)
+}
+
+// NewFileLogWriter creates a new LogWriter which writes to the given file and
+// has rotation enabled if rotate is true.
+//
+// If rotate is true, any time a new log file is opened, the old one is renamed
+// with a .### extension to preserve it.  The various Set* methods can be used
+// to configure log rotation based on lines, size, and daily.
+//
+// The standard log-line format is:
+//   [%D %T] [%L] (%S) %M
+func NewFileLogWriter(fname string, rotate bool) *FileLogWriter {
+	w := &FileLogWriter{
+		rec:       make(chan *LogRecord, LogBufferLength),
+		rot:       make(chan bool),
+		filename:  fname,
+		format:    "[%D %T] [%L] (%S) %M",
+		rotate:    rotate,
+		maxbackup: 999,
+	}
+
+	// open the file for the first time
+	if err := w.intRotate(); err != nil {
+		fmt.Fprintf(os.Stderr, "FileLogWriter(%q): %s\n", w.filename, err)
+		return nil
+	}
+
+	go func() {
+		defer func() {
+			if w.file != nil {
+				fmt.Fprint(w.file, FormatLogRecord(w.trailer, &LogRecord{Created: time.Now()}))
+				w.file.Sync()
+				w.file.Close()
+			}
+		}()
+
+		for {
+			select {
+			case <-w.rot:
+				if err := w.intRotate(); err != nil {
+					fmt.Fprintf(os.Stderr, "FileLogWriter(%q): %s\n", w.filename, err)
+					return
+				}
+			case rec, ok := <-w.rec:
+				if !ok {
+					return
+				}
+				now := time.Now()
+				if (w.maxlines > 0 && w.maxlines_curlines >= w.maxlines) ||
+					(w.maxsize > 0 && w.maxsize_cursize >= w.maxsize) ||
+					(w.daily && now.Day() != w.daily_opendate) {
+					if err := w.intRotate(); err != nil {
+						fmt.Fprintf(os.Stderr, "FileLogWriter(%q): %s\n", w.filename, err)
+						return
+					}
+				}
+
+				// Perform the write
+				n, err := fmt.Fprint(w.file, FormatLogRecord(w.format, rec))
+				if err != nil {
+					fmt.Fprintf(os.Stderr, "FileLogWriter(%q): %s\n", w.filename, err)
+					return
+				}
+
+				// Update the counts
+				w.maxlines_curlines++
+				w.maxsize_cursize += n
+			}
+		}
+	}()
+
+	return w
+}
+
+// Request that the logs rotate
+func (w *FileLogWriter) Rotate() {
+	w.rot <- true
+}
+
+// If this is called in a threaded context, it MUST be synchronized
+func (w *FileLogWriter) intRotate() error {
+	// Close any log file that may be open
+	if w.file != nil {
+		fmt.Fprint(w.file, FormatLogRecord(w.trailer, &LogRecord{Created: time.Now()}))
+		w.file.Close()
+	}
+
+	// If we are keeping log files, move it to the next available number
+	if w.rotate {
+		_, err := os.Lstat(w.filename)
+		if err == nil { // file exists
+			// Find the next available number
+			num := 1
+			fname := ""
+			if w.daily && time.Now().Day() != w.daily_opendate {
+				yesterday := time.Now().AddDate(0, 0, -1).Format("2006-01-02")
+
+				for ; err == nil && num <= 999; num++ {
+					fname = w.filename + fmt.Sprintf(".%s.%03d", yesterday, num)
+					_, err = os.Lstat(fname)
+				}
+				// return error if the last file checked still existed
+				if err == nil {
+					return fmt.Errorf("Rotate: Cannot find free log number to rename %s\n", w.filename)
+				}
+			} else {
+				num = w.maxbackup - 1
+				for ; num >= 1; num-- {
+					fname = w.filename + fmt.Sprintf(".%d", num)
+					nfname := w.filename + fmt.Sprintf(".%d", num+1)
+					_, err = os.Lstat(fname)
+					if err == nil {
+						os.Rename(fname, nfname)
+					}
+				}
+			}
+
+			w.file.Close()
+			// Rename the file to its newfound home
+			err = os.Rename(w.filename, fname)
+			if err != nil {
+				return fmt.Errorf("Rotate: %s\n", err)
+			}
+		}
+	}
+
+	// Open the log file
+	fd, err := os.OpenFile(w.filename, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0660)
+	if err != nil {
+		return err
+	}
+	w.file = fd
+
+	now := time.Now()
+	fmt.Fprint(w.file, FormatLogRecord(w.header, &LogRecord{Created: now}))
+
+	// Set the daily open date to the current date
+	w.daily_opendate = now.Day()
+
+	// initialize rotation values
+	w.maxlines_curlines = 0
+	w.maxsize_cursize = 0
+
+	return nil
+}
+
+// Set the logging format (chainable).  Must be called before the first log
+// message is written.
+func (w *FileLogWriter) SetFormat(format string) *FileLogWriter {
+	w.format = format
+	return w
+}
+
+// Set the logfile header and footer (chainable).  Must be called before the first log
+// message is written.  These are formatted similar to the FormatLogRecord (e.g.
+// you can use %D and %T in your header/footer for date and time).
+func (w *FileLogWriter) SetHeadFoot(head, foot string) *FileLogWriter {
+	w.header, w.trailer = head, foot
+	if w.maxlines_curlines == 0 {
+		fmt.Fprint(w.file, FormatLogRecord(w.header, &LogRecord{Created: time.Now()}))
+	}
+	return w
+}
+
+// Set rotate at linecount (chainable). Must be called before the first log
+// message is written.
+func (w *FileLogWriter) SetRotateLines(maxlines int) *FileLogWriter {
+	//fmt.Fprintf(os.Stderr, "FileLogWriter.SetRotateLines: %v\n", maxlines)
+	w.maxlines = maxlines
+	return w
+}
+
+// Set rotate at size (chainable). Must be called before the first log message
+// is written.
+func (w *FileLogWriter) SetRotateSize(maxsize int) *FileLogWriter {
+	//fmt.Fprintf(os.Stderr, "FileLogWriter.SetRotateSize: %v\n", maxsize)
+	w.maxsize = maxsize
+	return w
+}
+
+// Set rotate daily (chainable). Must be called before the first log message is
+// written.
+func (w *FileLogWriter) SetRotateDaily(daily bool) *FileLogWriter {
+	//fmt.Fprintf(os.Stderr, "FileLogWriter.SetRotateDaily: %v\n", daily)
+	w.daily = daily
+	return w
+}
+
+// Set max backup files. Must be called before the first log message
+// is written.
+func (w *FileLogWriter) SetRotateMaxBackup(maxbackup int) *FileLogWriter {
+	w.maxbackup = maxbackup
+	return w
+}
+
+// SetRotate changes whether or not the old logs are kept. (chainable) Must be
+// called before the first log message is written.  If rotate is false, the
+// files are overwritten; otherwise, they are rotated to another file before the
+// new log is opened.
+func (w *FileLogWriter) SetRotate(rotate bool) *FileLogWriter {
+	//fmt.Fprintf(os.Stderr, "FileLogWriter.SetRotate: %v\n", rotate)
+	w.rotate = rotate
+	return w
+}
+
+// NewXMLLogWriter is a utility method for creating a FileLogWriter set up to
+// output XML record log messages instead of line-based ones.
+func NewXMLLogWriter(fname string, rotate bool) *FileLogWriter {
+	return NewFileLogWriter(fname, rotate).SetFormat(
+		`	<record level="%L">
+		<timestamp>%D %T</timestamp>
+		<source>%S</source>
+		<message>%M</message>
+	</record>`).SetHeadFoot("<log created=\"%D %T\">", "</log>")
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/log4go.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/log4go.go
new file mode 100644
index 00000000..822e890c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/log4go.go
@@ -0,0 +1,484 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+// Package log4go provides level-based and highly configurable logging.
+//
+// Enhanced Logging
+//
+// This is inspired by the logging functionality in Java.  Essentially, you create a Logger
+// object and create output filters for it.  You can send whatever you want to the Logger,
+// and it will filter that based on your settings and send it to the outputs.  This way, you
+// can put as much debug code in your program as you want, and when you're done you can filter
+// out the mundane messages so only the important ones show up.
+//
+// Utility functions are provided to make life easier. Here is some example code to get started:
+//
+// log := log4go.NewLogger()
+// log.AddFilter("stdout", log4go.DEBUG, log4go.NewConsoleLogWriter())
+// log.AddFilter("log",    log4go.FINE,  log4go.NewFileLogWriter("example.log", true))
+// log.Info("The time is now: %s", time.LocalTime().Format("15:04:05 MST 2006/01/02"))
+//
+// The first two lines can be combined with the utility NewDefaultLogger:
+//
+// log := log4go.NewDefaultLogger(log4go.DEBUG)
+// log.AddFilter("log",    log4go.FINE,  log4go.NewFileLogWriter("example.log", true))
+// log.Info("The time is now: %s", time.LocalTime().Format("15:04:05 MST 2006/01/02"))
+//
+// Usage notes:
+// - The ConsoleLogWriter does not display the source of the message to standard
+//   output, but the FileLogWriter does.
+// - The utility functions (Info, Debug, Warn, etc) derive their source from the
+//   calling function, and this incurs extra overhead.
+//
+// Changes from 2.0:
+// - The external interface has remained mostly stable, but a lot of the
+//   internals have been changed, so if you depended on any of this or created
+//   your own LogWriter, then you will probably have to update your code.  In
+//   particular, Logger is now a map and ConsoleLogWriter is now a channel
+//   behind-the-scenes, and the LogWrite method no longer has return values.
+//
+// Future work: (please let me know if you think I should work on any of these particularly)
+// - Log file rotation
+// - Logging configuration files ala log4j
+// - Have the ability to remove filters?
+// - Have GetInfoChannel, GetDebugChannel, etc return a chan string that allows
+//   for another method of logging
+// - Add an XML filter type
+package log4go
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"runtime"
+	"strings"
+	"time"
+)
+
+// Version information
+const (
+	L4G_VERSION = "log4go-v3.0.1"
+	L4G_MAJOR   = 3
+	L4G_MINOR   = 0
+	L4G_BUILD   = 1
+)
+
+/****** Constants ******/
+
+// These are the integer logging levels used by the logger
+type Level int
+
+const (
+	FINEST Level = iota
+	FINE
+	DEBUG
+	TRACE
+	INFO
+	WARNING
+	ERROR
+	CRITICAL
+)
+
+// Logging level strings
+var (
+	levelStrings = [...]string{"FNST", "FINE", "DEBG", "TRAC", "INFO", "WARN", "EROR", "CRIT"}
+)
+
+func (l Level) String() string {
+	if l < 0 || int(l) > len(levelStrings) {
+		return "UNKNOWN"
+	}
+	return levelStrings[int(l)]
+}
+
+/****** Variables ******/
+var (
+	// LogBufferLength specifies how many log messages a particular log4go
+	// logger can buffer at a time before writing them.
+	LogBufferLength = 32
+)
+
+/****** LogRecord ******/
+
+// A LogRecord contains all of the pertinent information for each message
+type LogRecord struct {
+	Level   Level     // The log level
+	Created time.Time // The time at which the log message was created (nanoseconds)
+	Source  string    // The message source
+	Message string    // The log message
+}
+
+/****** LogWriter ******/
+
+// This is an interface for anything that should be able to write logs
+type LogWriter interface {
+	// This will be called to log a LogRecord message.
+	LogWrite(rec *LogRecord)
+
+	// This should clean up anything lingering about the LogWriter, as it is called before
+	// the LogWriter is removed.  LogWrite should not be called after Close.
+	Close()
+}
+
+/****** Logger ******/
+
+// A Filter represents the log level below which no log records are written to
+// the associated LogWriter.
+type Filter struct {
+	Level Level
+	LogWriter
+}
+
+// A Logger represents a collection of Filters through which log messages are
+// written.
+type Logger map[string]*Filter
+
+// Create a new logger.
+//
+// DEPRECATED: Use make(Logger) instead.
+func NewLogger() Logger {
+	os.Stderr.WriteString("warning: use of deprecated NewLogger\n")
+	return make(Logger)
+}
+
+// Create a new logger with a "stdout" filter configured to send log messages at
+// or above lvl to standard output.
+//
+// DEPRECATED: use NewDefaultLogger instead.
+func NewConsoleLogger(lvl Level) Logger {
+	os.Stderr.WriteString("warning: use of deprecated NewConsoleLogger\n")
+	return Logger{
+		"stdout": &Filter{lvl, NewConsoleLogWriter()},
+	}
+}
+
+// Create a new logger with a "stdout" filter configured to send log messages at
+// or above lvl to standard output.
+func NewDefaultLogger(lvl Level) Logger {
+	return Logger{
+		"stdout": &Filter{lvl, NewConsoleLogWriter()},
+	}
+}
+
+// Closes all log writers in preparation for exiting the program or a
+// reconfiguration of logging.  Calling this is not really imperative, unless
+// you want to guarantee that all log messages are written.  Close removes
+// all filters (and thus all LogWriters) from the logger.
+func (log Logger) Close() {
+	// Close all open loggers
+	for name, filt := range log {
+		filt.Close()
+		delete(log, name)
+	}
+}
+
+// Add a new LogWriter to the Logger which will only log messages at lvl or
+// higher.  This function should not be called from multiple goroutines.
+// Returns the logger for chaining.
+func (log Logger) AddFilter(name string, lvl Level, writer LogWriter) Logger {
+	log[name] = &Filter{lvl, writer}
+	return log
+}
+
+/******* Logging *******/
+// Send a formatted log message internally
+func (log Logger) intLogf(lvl Level, format string, args ...interface{}) {
+	skip := true
+
+	// Determine if any logging will be done
+	for _, filt := range log {
+		if lvl >= filt.Level {
+			skip = false
+			break
+		}
+	}
+	if skip {
+		return
+	}
+
+	// Determine caller func
+	pc, _, lineno, ok := runtime.Caller(2)
+	src := ""
+	if ok {
+		src = fmt.Sprintf("%s:%d", runtime.FuncForPC(pc).Name(), lineno)
+	}
+
+	msg := format
+	if len(args) > 0 {
+		msg = fmt.Sprintf(format, args...)
+	}
+
+	// Make the log record
+	rec := &LogRecord{
+		Level:   lvl,
+		Created: time.Now(),
+		Source:  src,
+		Message: msg,
+	}
+
+	// Dispatch the logs
+	for _, filt := range log {
+		if lvl < filt.Level {
+			continue
+		}
+		filt.LogWrite(rec)
+	}
+}
+
+// Send a closure log message internally
+func (log Logger) intLogc(lvl Level, closure func() string) {
+	skip := true
+
+	// Determine if any logging will be done
+	for _, filt := range log {
+		if lvl >= filt.Level {
+			skip = false
+			break
+		}
+	}
+	if skip {
+		return
+	}
+
+	// Determine caller func
+	pc, _, lineno, ok := runtime.Caller(2)
+	src := ""
+	if ok {
+		src = fmt.Sprintf("%s:%d", runtime.FuncForPC(pc).Name(), lineno)
+	}
+
+	// Make the log record
+	rec := &LogRecord{
+		Level:   lvl,
+		Created: time.Now(),
+		Source:  src,
+		Message: closure(),
+	}
+
+	// Dispatch the logs
+	for _, filt := range log {
+		if lvl < filt.Level {
+			continue
+		}
+		filt.LogWrite(rec)
+	}
+}
+
+// Send a log message with manual level, source, and message.
+func (log Logger) Log(lvl Level, source, message string) {
+	skip := true
+
+	// Determine if any logging will be done
+	for _, filt := range log {
+		if lvl >= filt.Level {
+			skip = false
+			break
+		}
+	}
+	if skip {
+		return
+	}
+
+	// Make the log record
+	rec := &LogRecord{
+		Level:   lvl,
+		Created: time.Now(),
+		Source:  source,
+		Message: message,
+	}
+
+	// Dispatch the logs
+	for _, filt := range log {
+		if lvl < filt.Level {
+			continue
+		}
+		filt.LogWrite(rec)
+	}
+}
+
+// Logf logs a formatted log message at the given log level, using the caller as
+// its source.
+func (log Logger) Logf(lvl Level, format string, args ...interface{}) {
+	log.intLogf(lvl, format, args...)
+}
+
+// Logc logs a string returned by the closure at the given log level, using the caller as
+// its source.  If no log message would be written, the closure is never called.
+func (log Logger) Logc(lvl Level, closure func() string) {
+	log.intLogc(lvl, closure)
+}
+
+// Finest logs a message at the finest log level.
+// See Debug for an explanation of the arguments.
+func (log Logger) Finest(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = FINEST
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		log.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		log.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		log.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Fine logs a message at the fine log level.
+// See Debug for an explanation of the arguments.
+func (log Logger) Fine(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = FINE
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		log.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		log.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		log.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Debug is a utility method for debug log messages.
+// The behavior of Debug depends on the first argument:
+// - arg0 is a string
+//   When given a string as the first argument, this behaves like Logf but with
+//   the DEBUG log level: the first argument is interpreted as a format for the
+//   latter arguments.
+// - arg0 is a func()string
+//   When given a closure of type func()string, this logs the string returned by
+//   the closure iff it will be logged.  The closure runs at most one time.
+// - arg0 is interface{}
+//   When given anything else, the log message will be each of the arguments
+//   formatted with %v and separated by spaces (ala Sprint).
+func (log Logger) Debug(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = DEBUG
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		log.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		log.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		log.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Trace logs a message at the trace log level.
+// See Debug for an explanation of the arguments.
+func (log Logger) Trace(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = TRACE
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		log.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		log.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		log.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Info logs a message at the info log level.
+// See Debug for an explanation of the arguments.
+func (log Logger) Info(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = INFO
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		log.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		log.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		log.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Warn logs a message at the warning log level and returns the formatted error.
+// At the warning level and higher, there is no performance benefit if the
+// message is not actually logged, because all formats are processed and all
+// closures are executed to format the error message.
+// See Debug for further explanation of the arguments.
+func (log Logger) Warn(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = WARNING
+	)
+	var msg string
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		msg = fmt.Sprintf(first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		msg = first()
+	default:
+		// Build a format string so that it will be similar to Sprint
+		msg = fmt.Sprintf(fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+	}
+	log.intLogf(lvl, msg)
+	return errors.New(msg)
+}
+
+// Error logs a message at the error log level and returns the formatted error,
+// See Warn for an explanation of the performance and Debug for an explanation
+// of the parameters.
+func (log Logger) Error(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = ERROR
+	)
+	var msg string
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		msg = fmt.Sprintf(first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		msg = first()
+	default:
+		// Build a format string so that it will be similar to Sprint
+		msg = fmt.Sprintf(fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+	}
+	log.intLogf(lvl, msg)
+	return errors.New(msg)
+}
+
+// Critical logs a message at the critical log level and returns the formatted error,
+// See Warn for an explanation of the performance and Debug for an explanation
+// of the parameters.
+func (log Logger) Critical(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = CRITICAL
+	)
+	var msg string
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		msg = fmt.Sprintf(first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		msg = first()
+	default:
+		// Build a format string so that it will be similar to Sprint
+		msg = fmt.Sprintf(fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+	}
+	log.intLogf(lvl, msg)
+	return errors.New(msg)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/pattlog.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/pattlog.go
new file mode 100644
index 00000000..98632e4d
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/pattlog.go
@@ -0,0 +1,130 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+	"sync"
+)
+
+const (
+	FORMAT_DEFAULT = "[%D %T] [%L] (%S) %M"
+	FORMAT_SHORT   = "[%t %d] [%L] %M"
+	FORMAT_ABBREV  = "[%L] %M"
+)
+
+type formatCacheType struct {
+	LastUpdateSeconds    int64
+	shortTime, shortDate string
+	longTime, longDate   string
+}
+
+var formatCache = &formatCacheType{}
+var mutex sync.Mutex
+
+// Known format codes:
+// %T - Time (15:04:05 MST)
+// %t - Time (15:04)
+// %D - Date (2006/01/02)
+// %d - Date (01/02/06)
+// %L - Level (FNST, FINE, DEBG, TRAC, WARN, EROR, CRIT)
+// %S - Source
+// %M - Message
+// Ignores unknown formats
+// Recommended: "[%D %T] [%L] (%S) %M"
+func FormatLogRecord(format string, rec *LogRecord) string {
+	if rec == nil {
+		return "<nil>"
+	}
+	if len(format) == 0 {
+		return ""
+	}
+
+	out := bytes.NewBuffer(make([]byte, 0, 64))
+	secs := rec.Created.UnixNano() / 1e9
+
+	mutex.Lock()
+	cache := *formatCache
+	if cache.LastUpdateSeconds != secs {
+		month, day, year := rec.Created.Month(), rec.Created.Day(), rec.Created.Year()
+		hour, minute, second := rec.Created.Hour(), rec.Created.Minute(), rec.Created.Second()
+		zone, _ := rec.Created.Zone()
+		updated := &formatCacheType{
+			LastUpdateSeconds: secs,
+			shortTime:         fmt.Sprintf("%02d:%02d", hour, minute),
+			shortDate:         fmt.Sprintf("%02d/%02d/%02d", day, month, year%100),
+			longTime:          fmt.Sprintf("%02d:%02d:%02d %s", hour, minute, second, zone),
+			longDate:          fmt.Sprintf("%04d/%02d/%02d", year, month, day),
+		}
+		cache = *updated
+		formatCache = updated
+	}
+	mutex.Unlock()
+
+	// Split the string into pieces by % signs
+	pieces := bytes.Split([]byte(format), []byte{'%'})
+
+	// Iterate over the pieces, replacing known formats
+	for i, piece := range pieces {
+		if i > 0 && len(piece) > 0 {
+			switch piece[0] {
+			case 'T':
+				out.WriteString(cache.longTime)
+			case 't':
+				out.WriteString(cache.shortTime)
+			case 'D':
+				out.WriteString(cache.longDate)
+			case 'd':
+				out.WriteString(cache.shortDate)
+			case 'L':
+				out.WriteString(levelStrings[rec.Level])
+			case 'S':
+				out.WriteString(rec.Source)
+			case 's':
+				slice := strings.Split(rec.Source, "/")
+				out.WriteString(slice[len(slice)-1])
+			case 'M':
+				out.WriteString(rec.Message)
+			}
+			if len(piece) > 1 {
+				out.Write(piece[1:])
+			}
+		} else if len(piece) > 0 {
+			out.Write(piece)
+		}
+	}
+	out.WriteByte('\n')
+
+	return out.String()
+}
+
+// This is the standard writer that prints to standard output.
+type FormatLogWriter chan *LogRecord
+
+// This creates a new FormatLogWriter
+func NewFormatLogWriter(out io.Writer, format string) FormatLogWriter {
+	records := make(FormatLogWriter, LogBufferLength)
+	go records.run(out, format)
+	return records
+}
+
+func (w FormatLogWriter) run(out io.Writer, format string) {
+	for rec := range w {
+		fmt.Fprint(out, FormatLogRecord(format, rec))
+	}
+}
+
+// This is the FormatLogWriter's output method.  This will block if the output
+// buffer is full.
+func (w FormatLogWriter) LogWrite(rec *LogRecord) {
+	w <- rec
+}
+
+// Close stops the logger from sending messages to standard output.  Attempts to
+// send log messages to this logger after a Close have undefined behavior.
+func (w FormatLogWriter) Close() {
+	close(w)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/socklog.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/socklog.go
new file mode 100644
index 00000000..1d224a99
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/socklog.go
@@ -0,0 +1,57 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"encoding/json"
+	"fmt"
+	"net"
+	"os"
+)
+
+// This log writer sends output to a socket
+type SocketLogWriter chan *LogRecord
+
+// This is the SocketLogWriter's output method
+func (w SocketLogWriter) LogWrite(rec *LogRecord) {
+	w <- rec
+}
+
+func (w SocketLogWriter) Close() {
+	close(w)
+}
+
+func NewSocketLogWriter(proto, hostport string) SocketLogWriter {
+	sock, err := net.Dial(proto, hostport)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "NewSocketLogWriter(%q): %s\n", hostport, err)
+		return nil
+	}
+
+	w := SocketLogWriter(make(chan *LogRecord, LogBufferLength))
+
+	go func() {
+		defer func() {
+			if sock != nil && proto == "tcp" {
+				sock.Close()
+			}
+		}()
+
+		for rec := range w {
+			// Marshall into JSON
+			js, err := json.Marshal(rec)
+			if err != nil {
+				fmt.Fprint(os.Stderr, "SocketLogWriter(%q): %s", hostport, err)
+				return
+			}
+
+			_, err = sock.Write(js)
+			if err != nil {
+				fmt.Fprint(os.Stderr, "SocketLogWriter(%q): %s", hostport, err)
+				return
+			}
+		}
+	}()
+
+	return w
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/termlog.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/termlog.go
new file mode 100644
index 00000000..8a941e26
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/termlog.go
@@ -0,0 +1,49 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"time"
+)
+
+var stdout io.Writer = os.Stdout
+
+// This is the standard writer that prints to standard output.
+type ConsoleLogWriter struct {
+	format string
+	w      chan *LogRecord
+}
+
+// This creates a new ConsoleLogWriter
+func NewConsoleLogWriter() *ConsoleLogWriter {
+	consoleWriter := &ConsoleLogWriter{
+		format: "[%T %D] [%L] (%S) %M",
+		w:      make(chan *LogRecord, LogBufferLength),
+	}
+	go consoleWriter.run(stdout)
+	return consoleWriter
+}
+func (c *ConsoleLogWriter) SetFormat(format string) {
+	c.format = format
+}
+func (c *ConsoleLogWriter) run(out io.Writer) {
+	for rec := range c.w {
+		fmt.Fprint(out, FormatLogRecord(c.format, rec))
+	}
+}
+
+// This is the ConsoleLogWriter's output method.  This will block if the output
+// buffer is full.
+func (c *ConsoleLogWriter) LogWrite(rec *LogRecord) {
+	c.w <- rec
+}
+
+// Close stops the logger from sending messages to standard output.  Attempts to
+// send log messages to this logger after a Close have undefined behavior.
+func (c *ConsoleLogWriter) Close() {
+	close(c.w)
+	time.Sleep(50 * time.Millisecond) // Try to give console I/O time to complete
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/wrapper.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/wrapper.go
new file mode 100644
index 00000000..2ae222b0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/alecthomas/log4go/wrapper.go
@@ -0,0 +1,278 @@
+// Copyright (C) 2010, Kyle Lemons <kyle@kylelemons.net>.  All rights reserved.
+
+package log4go
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+)
+
+var (
+	Global Logger
+)
+
+func init() {
+	Global = NewDefaultLogger(DEBUG)
+}
+
+// Wrapper for (*Logger).LoadConfiguration
+func LoadConfiguration(filename string) {
+	Global.LoadConfiguration(filename)
+}
+
+// Wrapper for (*Logger).AddFilter
+func AddFilter(name string, lvl Level, writer LogWriter) {
+	Global.AddFilter(name, lvl, writer)
+}
+
+// Wrapper for (*Logger).Close (closes and removes all logwriters)
+func Close() {
+	Global.Close()
+}
+
+func Crash(args ...interface{}) {
+	if len(args) > 0 {
+		Global.intLogf(CRITICAL, strings.Repeat(" %v", len(args))[1:], args...)
+	}
+	panic(args)
+}
+
+// Logs the given message and crashes the program
+func Crashf(format string, args ...interface{}) {
+	Global.intLogf(CRITICAL, format, args...)
+	Global.Close() // so that hopefully the messages get logged
+	panic(fmt.Sprintf(format, args...))
+}
+
+// Compatibility with `log`
+func Exit(args ...interface{}) {
+	if len(args) > 0 {
+		Global.intLogf(ERROR, strings.Repeat(" %v", len(args))[1:], args...)
+	}
+	Global.Close() // so that hopefully the messages get logged
+	os.Exit(0)
+}
+
+// Compatibility with `log`
+func Exitf(format string, args ...interface{}) {
+	Global.intLogf(ERROR, format, args...)
+	Global.Close() // so that hopefully the messages get logged
+	os.Exit(0)
+}
+
+// Compatibility with `log`
+func Stderr(args ...interface{}) {
+	if len(args) > 0 {
+		Global.intLogf(ERROR, strings.Repeat(" %v", len(args))[1:], args...)
+	}
+}
+
+// Compatibility with `log`
+func Stderrf(format string, args ...interface{}) {
+	Global.intLogf(ERROR, format, args...)
+}
+
+// Compatibility with `log`
+func Stdout(args ...interface{}) {
+	if len(args) > 0 {
+		Global.intLogf(INFO, strings.Repeat(" %v", len(args))[1:], args...)
+	}
+}
+
+// Compatibility with `log`
+func Stdoutf(format string, args ...interface{}) {
+	Global.intLogf(INFO, format, args...)
+}
+
+// Send a log message manually
+// Wrapper for (*Logger).Log
+func Log(lvl Level, source, message string) {
+	Global.Log(lvl, source, message)
+}
+
+// Send a formatted log message easily
+// Wrapper for (*Logger).Logf
+func Logf(lvl Level, format string, args ...interface{}) {
+	Global.intLogf(lvl, format, args...)
+}
+
+// Send a closure log message
+// Wrapper for (*Logger).Logc
+func Logc(lvl Level, closure func() string) {
+	Global.intLogc(lvl, closure)
+}
+
+// Utility for finest log messages (see Debug() for parameter explanation)
+// Wrapper for (*Logger).Finest
+func Finest(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = FINEST
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		Global.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Utility for fine log messages (see Debug() for parameter explanation)
+// Wrapper for (*Logger).Fine
+func Fine(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = FINE
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		Global.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Utility for debug log messages
+// When given a string as the first argument, this behaves like Logf but with the DEBUG log level (e.g. the first argument is interpreted as a format for the latter arguments)
+// When given a closure of type func()string, this logs the string returned by the closure iff it will be logged.  The closure runs at most one time.
+// When given anything else, the log message will be each of the arguments formatted with %v and separated by spaces (ala Sprint).
+// Wrapper for (*Logger).Debug
+func Debug(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = DEBUG
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		Global.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Utility for trace log messages (see Debug() for parameter explanation)
+// Wrapper for (*Logger).Trace
+func Trace(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = TRACE
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		Global.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Utility for info log messages (see Debug() for parameter explanation)
+// Wrapper for (*Logger).Info
+func Info(arg0 interface{}, args ...interface{}) {
+	const (
+		lvl = INFO
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+	case func() string:
+		// Log the closure (no other arguments used)
+		Global.intLogc(lvl, first)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(arg0)+strings.Repeat(" %v", len(args)), args...)
+	}
+}
+
+// Utility for warn log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
+// These functions will execute a closure exactly once, to build the error message for the return
+// Wrapper for (*Logger).Warn
+func Warn(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = WARNING
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+		return errors.New(fmt.Sprintf(first, args...))
+	case func() string:
+		// Log the closure (no other arguments used)
+		str := first()
+		Global.intLogf(lvl, "%s", str)
+		return errors.New(str)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+		return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
+	}
+	return nil
+}
+
+// Utility for error log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
+// These functions will execute a closure exactly once, to build the error message for the return
+// Wrapper for (*Logger).Error
+func Error(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = ERROR
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+		return errors.New(fmt.Sprintf(first, args...))
+	case func() string:
+		// Log the closure (no other arguments used)
+		str := first()
+		Global.intLogf(lvl, "%s", str)
+		return errors.New(str)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+		return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
+	}
+	return nil
+}
+
+// Utility for critical log messages (returns an error for easy function returns) (see Debug() for parameter explanation)
+// These functions will execute a closure exactly once, to build the error message for the return
+// Wrapper for (*Logger).Critical
+func Critical(arg0 interface{}, args ...interface{}) error {
+	const (
+		lvl = CRITICAL
+	)
+	switch first := arg0.(type) {
+	case string:
+		// Use the string as a format string
+		Global.intLogf(lvl, first, args...)
+		return errors.New(fmt.Sprintf(first, args...))
+	case func() string:
+		// Log the closure (no other arguments used)
+		str := first()
+		Global.intLogf(lvl, "%s", str)
+		return errors.New(str)
+	default:
+		// Build a format string so that it will be similar to Sprint
+		Global.intLogf(lvl, fmt.Sprint(first)+strings.Repeat(" %v", len(args)), args...)
+		return errors.New(fmt.Sprint(first) + fmt.Sprintf(strings.Repeat(" %v", len(args)), args...))
+	}
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
+You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
+You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
+webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
+
+We promise that we will not enforce the copyleft provisions in AGPL v3.0 against you if your application (a) does not
+link to the Mattermost Platform directly, but exclusively uses the Mattermost Admin Tools and Configuration Files, and
+(b) you have not modified, added to or adapted the source code of Mattermost in a way that results in the creation of
+a “modified version” or “work based on” Mattermost as these terms are defined in the AGPL v3.0 license.
+
+MATTERMOST TRADEMARK GUIDELINES
+
+Your use of the mark Mattermost is subject to Mattermost, Inc's prior written approval and our organization’s Trademark
+Standards of Use at http://www.mattermost.org/trademark-standards-of-use/. For trademark approval or any questions
+you have about using these trademarks, please email trademark@mattermost.com
+
+------------------------------------------------------------------------------------------------------------------------------
+
+                               Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
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+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
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+      Work and such Derivative Works in Source or Object form.
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+      or a Contribution incorporated within the Work constitutes direct
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
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+          within a display generated by the Derivative Works, if and
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+      appropriateness of using or redistributing the Work and assume any
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
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+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
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+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+------------------------------------------------------------------------------
+
+The software is released under the terms of the GNU Affero General Public
+License, version 3.
+
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
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+                     END OF TERMS AND CONDITIONS
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+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/add.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/add.go
new file mode 100644
index 00000000..0e5f6cdb
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/add.go
@@ -0,0 +1,113 @@
+//
+// https://tools.ietf.org/html/rfc4511
+//
+// AddRequest ::= [APPLICATION 8] SEQUENCE {
+//      entry           LDAPDN,
+//      attributes      AttributeList }
+//
+// AttributeList ::= SEQUENCE OF attribute Attribute
+
+package ldap
+
+import (
+	"errors"
+	"log"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// Attribute represents an LDAP attribute
+type Attribute struct {
+	// Type is the name of the LDAP attribute
+	Type string
+	// Vals are the LDAP attribute values
+	Vals []string
+}
+
+func (a *Attribute) encode() *ber.Packet {
+	seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Attribute")
+	seq.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, a.Type, "Type"))
+	set := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSet, nil, "AttributeValue")
+	for _, value := range a.Vals {
+		set.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, value, "Vals"))
+	}
+	seq.AppendChild(set)
+	return seq
+}
+
+// AddRequest represents an LDAP AddRequest operation
+type AddRequest struct {
+	// DN identifies the entry being added
+	DN string
+	// Attributes list the attributes of the new entry
+	Attributes []Attribute
+}
+
+func (a AddRequest) encode() *ber.Packet {
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationAddRequest, nil, "Add Request")
+	request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, a.DN, "DN"))
+	attributes := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Attributes")
+	for _, attribute := range a.Attributes {
+		attributes.AppendChild(attribute.encode())
+	}
+	request.AppendChild(attributes)
+	return request
+}
+
+// Attribute adds an attribute with the given type and values
+func (a *AddRequest) Attribute(attrType string, attrVals []string) {
+	a.Attributes = append(a.Attributes, Attribute{Type: attrType, Vals: attrVals})
+}
+
+// NewAddRequest returns an AddRequest for the given DN, with no attributes
+func NewAddRequest(dn string) *AddRequest {
+	return &AddRequest{
+		DN: dn,
+	}
+
+}
+
+// Add performs the given AddRequest
+func (l *Conn) Add(addRequest *AddRequest) error {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	packet.AppendChild(addRequest.encode())
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return err
+	}
+	defer l.finishMessage(msgCtx)
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if packet.Children[1].Tag == ApplicationAddResponse {
+		resultCode, resultDescription := getLDAPResultCode(packet)
+		if resultCode != 0 {
+			return NewError(resultCode, errors.New(resultDescription))
+		}
+	} else {
+		log.Printf("Unexpected Response: %d", packet.Children[1].Tag)
+	}
+
+	l.Debug.Printf("%d: returning", msgCtx.id)
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value.go
new file mode 100644
index 00000000..bccf7573
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value.go
@@ -0,0 +1,13 @@
+// +build go1.4
+
+package ldap
+
+import (
+	"sync/atomic"
+)
+
+// For compilers that support it, we just use the underlying sync/atomic.Value
+// type.
+type atomicValue struct {
+	atomic.Value
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value_go13.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value_go13.go
new file mode 100644
index 00000000..04920bb2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/atomic_value_go13.go
@@ -0,0 +1,28 @@
+// +build !go1.4
+
+package ldap
+
+import (
+	"sync"
+)
+
+// This is a helper type that emulates the use of the "sync/atomic.Value"
+// struct that's available in Go 1.4 and up.
+type atomicValue struct {
+	value interface{}
+	lock  sync.RWMutex
+}
+
+func (av *atomicValue) Store(val interface{}) {
+	av.lock.Lock()
+	av.value = val
+	av.lock.Unlock()
+}
+
+func (av *atomicValue) Load() interface{} {
+	av.lock.RLock()
+	ret := av.value
+	av.lock.RUnlock()
+
+	return ret
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/bind.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/bind.go
new file mode 100644
index 00000000..26b3cc72
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/bind.go
@@ -0,0 +1,143 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ldap
+
+import (
+	"errors"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// SimpleBindRequest represents a username/password bind operation
+type SimpleBindRequest struct {
+	// Username is the name of the Directory object that the client wishes to bind as
+	Username string
+	// Password is the credentials to bind with
+	Password string
+	// Controls are optional controls to send with the bind request
+	Controls []Control
+}
+
+// SimpleBindResult contains the response from the server
+type SimpleBindResult struct {
+	Controls []Control
+}
+
+// NewSimpleBindRequest returns a bind request
+func NewSimpleBindRequest(username string, password string, controls []Control) *SimpleBindRequest {
+	return &SimpleBindRequest{
+		Username: username,
+		Password: password,
+		Controls: controls,
+	}
+}
+
+func (bindRequest *SimpleBindRequest) encode() *ber.Packet {
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationBindRequest, nil, "Bind Request")
+	request.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, 3, "Version"))
+	request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, bindRequest.Username, "User Name"))
+	request.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 0, bindRequest.Password, "Password"))
+
+	request.AppendChild(encodeControls(bindRequest.Controls))
+
+	return request
+}
+
+// SimpleBind performs the simple bind operation defined in the given request
+func (l *Conn) SimpleBind(simpleBindRequest *SimpleBindRequest) (*SimpleBindResult, error) {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	encodedBindRequest := simpleBindRequest.encode()
+	packet.AppendChild(encodedBindRequest)
+
+	if l.Debug {
+		ber.PrintPacket(packet)
+	}
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return nil, err
+	}
+	defer l.finishMessage(msgCtx)
+
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return nil, NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return nil, err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return nil, err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	result := &SimpleBindResult{
+		Controls: make([]Control, 0),
+	}
+
+	if len(packet.Children) == 3 {
+		for _, child := range packet.Children[2].Children {
+			result.Controls = append(result.Controls, DecodeControl(child))
+		}
+	}
+
+	resultCode, resultDescription := getLDAPResultCode(packet)
+	if resultCode != 0 {
+		return result, NewError(resultCode, errors.New(resultDescription))
+	}
+
+	return result, nil
+}
+
+// Bind performs a bind with the given username and password
+func (l *Conn) Bind(username, password string) error {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	bindRequest := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationBindRequest, nil, "Bind Request")
+	bindRequest.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, 3, "Version"))
+	bindRequest.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, username, "User Name"))
+	bindRequest.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 0, password, "Password"))
+	packet.AppendChild(bindRequest)
+
+	if l.Debug {
+		ber.PrintPacket(packet)
+	}
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return err
+	}
+	defer l.finishMessage(msgCtx)
+
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	resultCode, resultDescription := getLDAPResultCode(packet)
+	if resultCode != 0 {
+		return NewError(resultCode, errors.New(resultDescription))
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/client.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/client.go
new file mode 100644
index 00000000..055b27b5
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/client.go
@@ -0,0 +1,27 @@
+package ldap
+
+import (
+	"crypto/tls"
+	"time"
+)
+
+// Client knows how to interact with an LDAP server
+type Client interface {
+	Start()
+	StartTLS(config *tls.Config) error
+	Close()
+	SetTimeout(time.Duration)
+
+	Bind(username, password string) error
+	SimpleBind(simpleBindRequest *SimpleBindRequest) (*SimpleBindResult, error)
+
+	Add(addRequest *AddRequest) error
+	Del(delRequest *DelRequest) error
+	Modify(modifyRequest *ModifyRequest) error
+
+	Compare(dn, attribute, value string) (bool, error)
+	PasswordModify(passwordModifyRequest *PasswordModifyRequest) (*PasswordModifyResult, error)
+
+	Search(searchRequest *SearchRequest) (*SearchResult, error)
+	SearchWithPaging(searchRequest *SearchRequest, pagingSize uint32) (*SearchResult, error)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/compare.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/compare.go
new file mode 100644
index 00000000..cc6d2af5
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/compare.go
@@ -0,0 +1,85 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// File contains Compare functionality
+//
+// https://tools.ietf.org/html/rfc4511
+//
+// CompareRequest ::= [APPLICATION 14] SEQUENCE {
+//              entry           LDAPDN,
+//              ava             AttributeValueAssertion }
+//
+// AttributeValueAssertion ::= SEQUENCE {
+//              attributeDesc   AttributeDescription,
+//              assertionValue  AssertionValue }
+//
+// AttributeDescription ::= LDAPString
+//                         -- Constrained to <attributedescription>
+//                         -- [RFC4512]
+//
+// AttributeValue ::= OCTET STRING
+//
+
+package ldap
+
+import (
+	"errors"
+	"fmt"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// Compare checks to see if the attribute of the dn matches value. Returns true if it does otherwise
+// false with any error that occurs if any.
+func (l *Conn) Compare(dn, attribute, value string) (bool, error) {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationCompareRequest, nil, "Compare Request")
+	request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, dn, "DN"))
+
+	ava := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "AttributeValueAssertion")
+	ava.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, attribute, "AttributeDesc"))
+	ava.AppendChild(ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagOctetString, value, "AssertionValue"))
+	request.AppendChild(ava)
+	packet.AppendChild(request)
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return false, err
+	}
+	defer l.finishMessage(msgCtx)
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return false, NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return false, err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return false, err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if packet.Children[1].Tag == ApplicationCompareResponse {
+		resultCode, resultDescription := getLDAPResultCode(packet)
+		if resultCode == LDAPResultCompareTrue {
+			return true, nil
+		} else if resultCode == LDAPResultCompareFalse {
+			return false, nil
+		} else {
+			return false, NewError(resultCode, errors.New(resultDescription))
+		}
+	}
+	return false, fmt.Errorf("Unexpected Response: %d", packet.Children[1].Tag)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/conn.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/conn.go
new file mode 100644
index 00000000..eb28eb47
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/conn.go
@@ -0,0 +1,470 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ldap
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"log"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+const (
+	// MessageQuit causes the processMessages loop to exit
+	MessageQuit = 0
+	// MessageRequest sends a request to the server
+	MessageRequest = 1
+	// MessageResponse receives a response from the server
+	MessageResponse = 2
+	// MessageFinish indicates the client considers a particular message ID to be finished
+	MessageFinish = 3
+	// MessageTimeout indicates the client-specified timeout for a particular message ID has been reached
+	MessageTimeout = 4
+)
+
+// PacketResponse contains the packet or error encountered reading a response
+type PacketResponse struct {
+	// Packet is the packet read from the server
+	Packet *ber.Packet
+	// Error is an error encountered while reading
+	Error error
+}
+
+// ReadPacket returns the packet or an error
+func (pr *PacketResponse) ReadPacket() (*ber.Packet, error) {
+	if (pr == nil) || (pr.Packet == nil && pr.Error == nil) {
+		return nil, NewError(ErrorNetwork, errors.New("ldap: could not retrieve response"))
+	}
+	return pr.Packet, pr.Error
+}
+
+type messageContext struct {
+	id int64
+	// close(done) should only be called from finishMessage()
+	done chan struct{}
+	// close(responses) should only be called from processMessages(), and only sent to from sendResponse()
+	responses chan *PacketResponse
+}
+
+// sendResponse should only be called within the processMessages() loop which
+// is also responsible for closing the responses channel.
+func (msgCtx *messageContext) sendResponse(packet *PacketResponse) {
+	select {
+	case msgCtx.responses <- packet:
+		// Successfully sent packet to message handler.
+	case <-msgCtx.done:
+		// The request handler is done and will not receive more
+		// packets.
+	}
+}
+
+type messagePacket struct {
+	Op        int
+	MessageID int64
+	Packet    *ber.Packet
+	Context   *messageContext
+}
+
+type sendMessageFlags uint
+
+const (
+	startTLS sendMessageFlags = 1 << iota
+)
+
+// Conn represents an LDAP Connection
+type Conn struct {
+	conn                net.Conn
+	isTLS               bool
+	closing             uint32
+	closeErr            atomicValue
+	isStartingTLS       bool
+	Debug               debugging
+	chanConfirm         chan struct{}
+	messageContexts     map[int64]*messageContext
+	chanMessage         chan *messagePacket
+	chanMessageID       chan int64
+	wgClose             sync.WaitGroup
+	outstandingRequests uint
+	messageMutex        sync.Mutex
+	requestTimeout      int64
+}
+
+var _ Client = &Conn{}
+
+// DefaultTimeout is a package-level variable that sets the timeout value
+// used for the Dial and DialTLS methods.
+//
+// WARNING: since this is a package-level variable, setting this value from
+// multiple places will probably result in undesired behaviour.
+var DefaultTimeout = 60 * time.Second
+
+// Dial connects to the given address on the given network using net.Dial
+// and then returns a new Conn for the connection.
+func Dial(network, addr string) (*Conn, error) {
+	c, err := net.DialTimeout(network, addr, DefaultTimeout)
+	if err != nil {
+		return nil, NewError(ErrorNetwork, err)
+	}
+	conn := NewConn(c, false)
+	conn.Start()
+	return conn, nil
+}
+
+// DialTLS connects to the given address on the given network using tls.Dial
+// and then returns a new Conn for the connection.
+func DialTLS(network, addr string, config *tls.Config) (*Conn, error) {
+	dc, err := net.DialTimeout(network, addr, DefaultTimeout)
+	if err != nil {
+		return nil, NewError(ErrorNetwork, err)
+	}
+	c := tls.Client(dc, config)
+	err = c.Handshake()
+	if err != nil {
+		// Handshake error, close the established connection before we return an error
+		dc.Close()
+		return nil, NewError(ErrorNetwork, err)
+	}
+	conn := NewConn(c, true)
+	conn.Start()
+	return conn, nil
+}
+
+// NewConn returns a new Conn using conn for network I/O.
+func NewConn(conn net.Conn, isTLS bool) *Conn {
+	return &Conn{
+		conn:            conn,
+		chanConfirm:     make(chan struct{}),
+		chanMessageID:   make(chan int64),
+		chanMessage:     make(chan *messagePacket, 10),
+		messageContexts: map[int64]*messageContext{},
+		requestTimeout:  0,
+		isTLS:           isTLS,
+	}
+}
+
+// Start initializes goroutines to read responses and process messages
+func (l *Conn) Start() {
+	go l.reader()
+	go l.processMessages()
+	l.wgClose.Add(1)
+}
+
+// isClosing returns whether or not we're currently closing.
+func (l *Conn) isClosing() bool {
+	return atomic.LoadUint32(&l.closing) == 1
+}
+
+// setClosing sets the closing value to true
+func (l *Conn) setClosing() bool {
+	return atomic.CompareAndSwapUint32(&l.closing, 0, 1)
+}
+
+// Close closes the connection.
+func (l *Conn) Close() {
+	l.messageMutex.Lock()
+	defer l.messageMutex.Unlock()
+
+	if l.setClosing() {
+		l.Debug.Printf("Sending quit message and waiting for confirmation")
+		l.chanMessage <- &messagePacket{Op: MessageQuit}
+		<-l.chanConfirm
+		close(l.chanMessage)
+
+		l.Debug.Printf("Closing network connection")
+		if err := l.conn.Close(); err != nil {
+			log.Println(err)
+		}
+
+		l.wgClose.Done()
+	}
+	l.wgClose.Wait()
+}
+
+// SetTimeout sets the time after a request is sent that a MessageTimeout triggers
+func (l *Conn) SetTimeout(timeout time.Duration) {
+	if timeout > 0 {
+		atomic.StoreInt64(&l.requestTimeout, int64(timeout))
+	}
+}
+
+// Returns the next available messageID
+func (l *Conn) nextMessageID() int64 {
+	if messageID, ok := <-l.chanMessageID; ok {
+		return messageID
+	}
+	return 0
+}
+
+// StartTLS sends the command to start a TLS session and then creates a new TLS Client
+func (l *Conn) StartTLS(config *tls.Config) error {
+	if l.isTLS {
+		return NewError(ErrorNetwork, errors.New("ldap: already encrypted"))
+	}
+
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationExtendedRequest, nil, "Start TLS")
+	request.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 0, "1.3.6.1.4.1.1466.20037", "TLS Extended Command"))
+	packet.AppendChild(request)
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessageWithFlags(packet, startTLS)
+	if err != nil {
+		return err
+	}
+	defer l.finishMessage(msgCtx)
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			l.Close()
+			return err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if resultCode, message := getLDAPResultCode(packet); resultCode == LDAPResultSuccess {
+		conn := tls.Client(l.conn, config)
+
+		if err := conn.Handshake(); err != nil {
+			l.Close()
+			return NewError(ErrorNetwork, fmt.Errorf("TLS handshake failed (%v)", err))
+		}
+
+		l.isTLS = true
+		l.conn = conn
+	} else {
+		return NewError(resultCode, fmt.Errorf("ldap: cannot StartTLS (%s)", message))
+	}
+	go l.reader()
+
+	return nil
+}
+
+func (l *Conn) sendMessage(packet *ber.Packet) (*messageContext, error) {
+	return l.sendMessageWithFlags(packet, 0)
+}
+
+func (l *Conn) sendMessageWithFlags(packet *ber.Packet, flags sendMessageFlags) (*messageContext, error) {
+	if l.isClosing() {
+		return nil, NewError(ErrorNetwork, errors.New("ldap: connection closed"))
+	}
+	l.messageMutex.Lock()
+	l.Debug.Printf("flags&startTLS = %d", flags&startTLS)
+	if l.isStartingTLS {
+		l.messageMutex.Unlock()
+		return nil, NewError(ErrorNetwork, errors.New("ldap: connection is in startls phase"))
+	}
+	if flags&startTLS != 0 {
+		if l.outstandingRequests != 0 {
+			l.messageMutex.Unlock()
+			return nil, NewError(ErrorNetwork, errors.New("ldap: cannot StartTLS with outstanding requests"))
+		}
+		l.isStartingTLS = true
+	}
+	l.outstandingRequests++
+
+	l.messageMutex.Unlock()
+
+	responses := make(chan *PacketResponse)
+	messageID := packet.Children[0].Value.(int64)
+	message := &messagePacket{
+		Op:        MessageRequest,
+		MessageID: messageID,
+		Packet:    packet,
+		Context: &messageContext{
+			id:        messageID,
+			done:      make(chan struct{}),
+			responses: responses,
+		},
+	}
+	l.sendProcessMessage(message)
+	return message.Context, nil
+}
+
+func (l *Conn) finishMessage(msgCtx *messageContext) {
+	close(msgCtx.done)
+
+	if l.isClosing() {
+		return
+	}
+
+	l.messageMutex.Lock()
+	l.outstandingRequests--
+	if l.isStartingTLS {
+		l.isStartingTLS = false
+	}
+	l.messageMutex.Unlock()
+
+	message := &messagePacket{
+		Op:        MessageFinish,
+		MessageID: msgCtx.id,
+	}
+	l.sendProcessMessage(message)
+}
+
+func (l *Conn) sendProcessMessage(message *messagePacket) bool {
+	l.messageMutex.Lock()
+	defer l.messageMutex.Unlock()
+	if l.isClosing() {
+		return false
+	}
+	l.chanMessage <- message
+	return true
+}
+
+func (l *Conn) processMessages() {
+	defer func() {
+		if err := recover(); err != nil {
+			log.Printf("ldap: recovered panic in processMessages: %v", err)
+		}
+		for messageID, msgCtx := range l.messageContexts {
+			// If we are closing due to an error, inform anyone who
+			// is waiting about the error.
+			if l.isClosing() && l.closeErr.Load() != nil {
+				msgCtx.sendResponse(&PacketResponse{Error: l.closeErr.Load().(error)})
+			}
+			l.Debug.Printf("Closing channel for MessageID %d", messageID)
+			close(msgCtx.responses)
+			delete(l.messageContexts, messageID)
+		}
+		close(l.chanMessageID)
+		close(l.chanConfirm)
+	}()
+
+	var messageID int64 = 1
+	for {
+		select {
+		case l.chanMessageID <- messageID:
+			messageID++
+		case message := <-l.chanMessage:
+			switch message.Op {
+			case MessageQuit:
+				l.Debug.Printf("Shutting down - quit message received")
+				return
+			case MessageRequest:
+				// Add to message list and write to network
+				l.Debug.Printf("Sending message %d", message.MessageID)
+
+				buf := message.Packet.Bytes()
+				_, err := l.conn.Write(buf)
+				if err != nil {
+					l.Debug.Printf("Error Sending Message: %s", err.Error())
+					message.Context.sendResponse(&PacketResponse{Error: fmt.Errorf("unable to send request: %s", err)})
+					close(message.Context.responses)
+					break
+				}
+
+				// Only add to messageContexts if we were able to
+				// successfully write the message.
+				l.messageContexts[message.MessageID] = message.Context
+
+				// Add timeout if defined
+				requestTimeout := time.Duration(atomic.LoadInt64(&l.requestTimeout))
+				if requestTimeout > 0 {
+					go func() {
+						defer func() {
+							if err := recover(); err != nil {
+								log.Printf("ldap: recovered panic in RequestTimeout: %v", err)
+							}
+						}()
+						time.Sleep(requestTimeout)
+						timeoutMessage := &messagePacket{
+							Op:        MessageTimeout,
+							MessageID: message.MessageID,
+						}
+						l.sendProcessMessage(timeoutMessage)
+					}()
+				}
+			case MessageResponse:
+				l.Debug.Printf("Receiving message %d", message.MessageID)
+				if msgCtx, ok := l.messageContexts[message.MessageID]; ok {
+					msgCtx.sendResponse(&PacketResponse{message.Packet, nil})
+				} else {
+					log.Printf("Received unexpected message %d, %v", message.MessageID, l.isClosing())
+					ber.PrintPacket(message.Packet)
+				}
+			case MessageTimeout:
+				// Handle the timeout by closing the channel
+				// All reads will return immediately
+				if msgCtx, ok := l.messageContexts[message.MessageID]; ok {
+					l.Debug.Printf("Receiving message timeout for %d", message.MessageID)
+					msgCtx.sendResponse(&PacketResponse{message.Packet, errors.New("ldap: connection timed out")})
+					delete(l.messageContexts, message.MessageID)
+					close(msgCtx.responses)
+				}
+			case MessageFinish:
+				l.Debug.Printf("Finished message %d", message.MessageID)
+				if msgCtx, ok := l.messageContexts[message.MessageID]; ok {
+					delete(l.messageContexts, message.MessageID)
+					close(msgCtx.responses)
+				}
+			}
+		}
+	}
+}
+
+func (l *Conn) reader() {
+	cleanstop := false
+	defer func() {
+		if err := recover(); err != nil {
+			log.Printf("ldap: recovered panic in reader: %v", err)
+		}
+		if !cleanstop {
+			l.Close()
+		}
+	}()
+
+	for {
+		if cleanstop {
+			l.Debug.Printf("reader clean stopping (without closing the connection)")
+			return
+		}
+		packet, err := ber.ReadPacket(l.conn)
+		if err != nil {
+			// A read error is expected here if we are closing the connection...
+			if !l.isClosing() {
+				l.closeErr.Store(fmt.Errorf("unable to read LDAP response packet: %s", err))
+				l.Debug.Printf("reader error: %s", err.Error())
+			}
+			return
+		}
+		addLDAPDescriptions(packet)
+		if len(packet.Children) == 0 {
+			l.Debug.Printf("Received bad ldap packet")
+			continue
+		}
+		l.messageMutex.Lock()
+		if l.isStartingTLS {
+			cleanstop = true
+		}
+		l.messageMutex.Unlock()
+		message := &messagePacket{
+			Op:        MessageResponse,
+			MessageID: packet.Children[0].Value.(int64),
+			Packet:    packet,
+		}
+		if !l.sendProcessMessage(message) {
+			return
+		}
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/control.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/control.go
new file mode 100644
index 00000000..342f325c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/control.go
@@ -0,0 +1,420 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ldap
+
+import (
+	"fmt"
+	"strconv"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+const (
+	// ControlTypePaging - https://www.ietf.org/rfc/rfc2696.txt
+	ControlTypePaging = "1.2.840.113556.1.4.319"
+	// ControlTypeBeheraPasswordPolicy - https://tools.ietf.org/html/draft-behera-ldap-password-policy-10
+	ControlTypeBeheraPasswordPolicy = "1.3.6.1.4.1.42.2.27.8.5.1"
+	// ControlTypeVChuPasswordMustChange - https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
+	ControlTypeVChuPasswordMustChange = "2.16.840.1.113730.3.4.4"
+	// ControlTypeVChuPasswordWarning - https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
+	ControlTypeVChuPasswordWarning = "2.16.840.1.113730.3.4.5"
+	// ControlTypeManageDsaIT - https://tools.ietf.org/html/rfc3296
+	ControlTypeManageDsaIT = "2.16.840.1.113730.3.4.2"
+)
+
+// ControlTypeMap maps controls to text descriptions
+var ControlTypeMap = map[string]string{
+	ControlTypePaging:               "Paging",
+	ControlTypeBeheraPasswordPolicy: "Password Policy - Behera Draft",
+	ControlTypeManageDsaIT:          "Manage DSA IT",
+}
+
+// Control defines an interface controls provide to encode and describe themselves
+type Control interface {
+	// GetControlType returns the OID
+	GetControlType() string
+	// Encode returns the ber packet representation
+	Encode() *ber.Packet
+	// String returns a human-readable description
+	String() string
+}
+
+// ControlString implements the Control interface for simple controls
+type ControlString struct {
+	ControlType  string
+	Criticality  bool
+	ControlValue string
+}
+
+// GetControlType returns the OID
+func (c *ControlString) GetControlType() string {
+	return c.ControlType
+}
+
+// Encode returns the ber packet representation
+func (c *ControlString) Encode() *ber.Packet {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
+	packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, c.ControlType, "Control Type ("+ControlTypeMap[c.ControlType]+")"))
+	if c.Criticality {
+		packet.AppendChild(ber.NewBoolean(ber.ClassUniversal, ber.TypePrimitive, ber.TagBoolean, c.Criticality, "Criticality"))
+	}
+	packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, string(c.ControlValue), "Control Value"))
+	return packet
+}
+
+// String returns a human-readable description
+func (c *ControlString) String() string {
+	return fmt.Sprintf("Control Type: %s (%q)  Criticality: %t  Control Value: %s", ControlTypeMap[c.ControlType], c.ControlType, c.Criticality, c.ControlValue)
+}
+
+// ControlPaging implements the paging control described in https://www.ietf.org/rfc/rfc2696.txt
+type ControlPaging struct {
+	// PagingSize indicates the page size
+	PagingSize uint32
+	// Cookie is an opaque value returned by the server to track a paging cursor
+	Cookie []byte
+}
+
+// GetControlType returns the OID
+func (c *ControlPaging) GetControlType() string {
+	return ControlTypePaging
+}
+
+// Encode returns the ber packet representation
+func (c *ControlPaging) Encode() *ber.Packet {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
+	packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, ControlTypePaging, "Control Type ("+ControlTypeMap[ControlTypePaging]+")"))
+
+	p2 := ber.Encode(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, nil, "Control Value (Paging)")
+	seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Search Control Value")
+	seq.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, int64(c.PagingSize), "Paging Size"))
+	cookie := ber.Encode(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, nil, "Cookie")
+	cookie.Value = c.Cookie
+	cookie.Data.Write(c.Cookie)
+	seq.AppendChild(cookie)
+	p2.AppendChild(seq)
+
+	packet.AppendChild(p2)
+	return packet
+}
+
+// String returns a human-readable description
+func (c *ControlPaging) String() string {
+	return fmt.Sprintf(
+		"Control Type: %s (%q)  Criticality: %t  PagingSize: %d  Cookie: %q",
+		ControlTypeMap[ControlTypePaging],
+		ControlTypePaging,
+		false,
+		c.PagingSize,
+		c.Cookie)
+}
+
+// SetCookie stores the given cookie in the paging control
+func (c *ControlPaging) SetCookie(cookie []byte) {
+	c.Cookie = cookie
+}
+
+// ControlBeheraPasswordPolicy implements the control described in https://tools.ietf.org/html/draft-behera-ldap-password-policy-10
+type ControlBeheraPasswordPolicy struct {
+	// Expire contains the number of seconds before a password will expire
+	Expire int64
+	// Grace indicates the remaining number of times a user will be allowed to authenticate with an expired password
+	Grace int64
+	// Error indicates the error code
+	Error int8
+	// ErrorString is a human readable error
+	ErrorString string
+}
+
+// GetControlType returns the OID
+func (c *ControlBeheraPasswordPolicy) GetControlType() string {
+	return ControlTypeBeheraPasswordPolicy
+}
+
+// Encode returns the ber packet representation
+func (c *ControlBeheraPasswordPolicy) Encode() *ber.Packet {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
+	packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, ControlTypeBeheraPasswordPolicy, "Control Type ("+ControlTypeMap[ControlTypeBeheraPasswordPolicy]+")"))
+
+	return packet
+}
+
+// String returns a human-readable description
+func (c *ControlBeheraPasswordPolicy) String() string {
+	return fmt.Sprintf(
+		"Control Type: %s (%q)  Criticality: %t  Expire: %d  Grace: %d  Error: %d, ErrorString: %s",
+		ControlTypeMap[ControlTypeBeheraPasswordPolicy],
+		ControlTypeBeheraPasswordPolicy,
+		false,
+		c.Expire,
+		c.Grace,
+		c.Error,
+		c.ErrorString)
+}
+
+// ControlVChuPasswordMustChange implements the control described in https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
+type ControlVChuPasswordMustChange struct {
+	// MustChange indicates if the password is required to be changed
+	MustChange bool
+}
+
+// GetControlType returns the OID
+func (c *ControlVChuPasswordMustChange) GetControlType() string {
+	return ControlTypeVChuPasswordMustChange
+}
+
+// Encode returns the ber packet representation
+func (c *ControlVChuPasswordMustChange) Encode() *ber.Packet {
+	return nil
+}
+
+// String returns a human-readable description
+func (c *ControlVChuPasswordMustChange) String() string {
+	return fmt.Sprintf(
+		"Control Type: %s (%q)  Criticality: %t  MustChange: %v",
+		ControlTypeMap[ControlTypeVChuPasswordMustChange],
+		ControlTypeVChuPasswordMustChange,
+		false,
+		c.MustChange)
+}
+
+// ControlVChuPasswordWarning implements the control described in https://tools.ietf.org/html/draft-vchu-ldap-pwd-policy-00
+type ControlVChuPasswordWarning struct {
+	// Expire indicates the time in seconds until the password expires
+	Expire int64
+}
+
+// GetControlType returns the OID
+func (c *ControlVChuPasswordWarning) GetControlType() string {
+	return ControlTypeVChuPasswordWarning
+}
+
+// Encode returns the ber packet representation
+func (c *ControlVChuPasswordWarning) Encode() *ber.Packet {
+	return nil
+}
+
+// String returns a human-readable description
+func (c *ControlVChuPasswordWarning) String() string {
+	return fmt.Sprintf(
+		"Control Type: %s (%q)  Criticality: %t  Expire: %b",
+		ControlTypeMap[ControlTypeVChuPasswordWarning],
+		ControlTypeVChuPasswordWarning,
+		false,
+		c.Expire)
+}
+
+// ControlManageDsaIT implements the control described in https://tools.ietf.org/html/rfc3296
+type ControlManageDsaIT struct {
+	// Criticality indicates if this control is required
+	Criticality bool
+}
+
+// GetControlType returns the OID
+func (c *ControlManageDsaIT) GetControlType() string {
+	return ControlTypeManageDsaIT
+}
+
+// Encode returns the ber packet representation
+func (c *ControlManageDsaIT) Encode() *ber.Packet {
+	//FIXME
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Control")
+	packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, ControlTypeManageDsaIT, "Control Type ("+ControlTypeMap[ControlTypeManageDsaIT]+")"))
+	if c.Criticality {
+		packet.AppendChild(ber.NewBoolean(ber.ClassUniversal, ber.TypePrimitive, ber.TagBoolean, c.Criticality, "Criticality"))
+	}
+	return packet
+}
+
+// String returns a human-readable description
+func (c *ControlManageDsaIT) String() string {
+	return fmt.Sprintf(
+		"Control Type: %s (%q)  Criticality: %t",
+		ControlTypeMap[ControlTypeManageDsaIT],
+		ControlTypeManageDsaIT,
+		c.Criticality)
+}
+
+// NewControlManageDsaIT returns a ControlManageDsaIT control
+func NewControlManageDsaIT(Criticality bool) *ControlManageDsaIT {
+	return &ControlManageDsaIT{Criticality: Criticality}
+}
+
+// FindControl returns the first control of the given type in the list, or nil
+func FindControl(controls []Control, controlType string) Control {
+	for _, c := range controls {
+		if c.GetControlType() == controlType {
+			return c
+		}
+	}
+	return nil
+}
+
+// DecodeControl returns a control read from the given packet, or nil if no recognized control can be made
+func DecodeControl(packet *ber.Packet) Control {
+	var (
+		ControlType = ""
+		Criticality = false
+		value       *ber.Packet
+	)
+
+	switch len(packet.Children) {
+	case 0:
+		// at least one child is required for control type
+		return nil
+
+	case 1:
+		// just type, no criticality or value
+		packet.Children[0].Description = "Control Type (" + ControlTypeMap[ControlType] + ")"
+		ControlType = packet.Children[0].Value.(string)
+
+	case 2:
+		packet.Children[0].Description = "Control Type (" + ControlTypeMap[ControlType] + ")"
+		ControlType = packet.Children[0].Value.(string)
+
+		// Children[1] could be criticality or value (both are optional)
+		// duck-type on whether this is a boolean
+		if _, ok := packet.Children[1].Value.(bool); ok {
+			packet.Children[1].Description = "Criticality"
+			Criticality = packet.Children[1].Value.(bool)
+		} else {
+			packet.Children[1].Description = "Control Value"
+			value = packet.Children[1]
+		}
+
+	case 3:
+		packet.Children[0].Description = "Control Type (" + ControlTypeMap[ControlType] + ")"
+		ControlType = packet.Children[0].Value.(string)
+
+		packet.Children[1].Description = "Criticality"
+		Criticality = packet.Children[1].Value.(bool)
+
+		packet.Children[2].Description = "Control Value"
+		value = packet.Children[2]
+
+	default:
+		// more than 3 children is invalid
+		return nil
+	}
+
+	switch ControlType {
+	case ControlTypeManageDsaIT:
+		return NewControlManageDsaIT(Criticality)
+	case ControlTypePaging:
+		value.Description += " (Paging)"
+		c := new(ControlPaging)
+		if value.Value != nil {
+			valueChildren := ber.DecodePacket(value.Data.Bytes())
+			value.Data.Truncate(0)
+			value.Value = nil
+			value.AppendChild(valueChildren)
+		}
+		value = value.Children[0]
+		value.Description = "Search Control Value"
+		value.Children[0].Description = "Paging Size"
+		value.Children[1].Description = "Cookie"
+		c.PagingSize = uint32(value.Children[0].Value.(int64))
+		c.Cookie = value.Children[1].Data.Bytes()
+		value.Children[1].Value = c.Cookie
+		return c
+	case ControlTypeBeheraPasswordPolicy:
+		value.Description += " (Password Policy - Behera)"
+		c := NewControlBeheraPasswordPolicy()
+		if value.Value != nil {
+			valueChildren := ber.DecodePacket(value.Data.Bytes())
+			value.Data.Truncate(0)
+			value.Value = nil
+			value.AppendChild(valueChildren)
+		}
+
+		sequence := value.Children[0]
+
+		for _, child := range sequence.Children {
+			if child.Tag == 0 {
+				//Warning
+				warningPacket := child.Children[0]
+				packet := ber.DecodePacket(warningPacket.Data.Bytes())
+				val, ok := packet.Value.(int64)
+				if ok {
+					if warningPacket.Tag == 0 {
+						//timeBeforeExpiration
+						c.Expire = val
+						warningPacket.Value = c.Expire
+					} else if warningPacket.Tag == 1 {
+						//graceAuthNsRemaining
+						c.Grace = val
+						warningPacket.Value = c.Grace
+					}
+				}
+			} else if child.Tag == 1 {
+				// Error
+				packet := ber.DecodePacket(child.Data.Bytes())
+				val, ok := packet.Value.(int8)
+				if !ok {
+					// what to do?
+					val = -1
+				}
+				c.Error = val
+				child.Value = c.Error
+				c.ErrorString = BeheraPasswordPolicyErrorMap[c.Error]
+			}
+		}
+		return c
+	case ControlTypeVChuPasswordMustChange:
+		c := &ControlVChuPasswordMustChange{MustChange: true}
+		return c
+	case ControlTypeVChuPasswordWarning:
+		c := &ControlVChuPasswordWarning{Expire: -1}
+		expireStr := ber.DecodeString(value.Data.Bytes())
+
+		expire, err := strconv.ParseInt(expireStr, 10, 64)
+		if err != nil {
+			return nil
+		}
+		c.Expire = expire
+		value.Value = c.Expire
+
+		return c
+	default:
+		c := new(ControlString)
+		c.ControlType = ControlType
+		c.Criticality = Criticality
+		if value != nil {
+			c.ControlValue = value.Value.(string)
+		}
+		return c
+	}
+}
+
+// NewControlString returns a generic control
+func NewControlString(controlType string, criticality bool, controlValue string) *ControlString {
+	return &ControlString{
+		ControlType:  controlType,
+		Criticality:  criticality,
+		ControlValue: controlValue,
+	}
+}
+
+// NewControlPaging returns a paging control
+func NewControlPaging(pagingSize uint32) *ControlPaging {
+	return &ControlPaging{PagingSize: pagingSize}
+}
+
+// NewControlBeheraPasswordPolicy returns a ControlBeheraPasswordPolicy
+func NewControlBeheraPasswordPolicy() *ControlBeheraPasswordPolicy {
+	return &ControlBeheraPasswordPolicy{
+		Expire: -1,
+		Grace:  -1,
+		Error:  -1,
+	}
+}
+
+func encodeControls(controls []Control) *ber.Packet {
+	packet := ber.Encode(ber.ClassContext, ber.TypeConstructed, 0, nil, "Controls")
+	for _, control := range controls {
+		packet.AppendChild(control.Encode())
+	}
+	return packet
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/debug.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/debug.go
new file mode 100644
index 00000000..7279fc25
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/debug.go
@@ -0,0 +1,24 @@
+package ldap
+
+import (
+	"log"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// debugging type
+//     - has a Printf method to write the debug output
+type debugging bool
+
+// write debug output
+func (debug debugging) Printf(format string, args ...interface{}) {
+	if debug {
+		log.Printf(format, args...)
+	}
+}
+
+func (debug debugging) PrintPacket(packet *ber.Packet) {
+	if debug {
+		ber.PrintPacket(packet)
+	}
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/del.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/del.go
new file mode 100644
index 00000000..4fd63dc3
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/del.go
@@ -0,0 +1,84 @@
+//
+// https://tools.ietf.org/html/rfc4511
+//
+// DelRequest ::= [APPLICATION 10] LDAPDN
+
+package ldap
+
+import (
+	"errors"
+	"log"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// DelRequest implements an LDAP deletion request
+type DelRequest struct {
+	// DN is the name of the directory entry to delete
+	DN string
+	// Controls hold optional controls to send with the request
+	Controls []Control
+}
+
+func (d DelRequest) encode() *ber.Packet {
+	request := ber.Encode(ber.ClassApplication, ber.TypePrimitive, ApplicationDelRequest, d.DN, "Del Request")
+	request.Data.Write([]byte(d.DN))
+	return request
+}
+
+// NewDelRequest creates a delete request for the given DN and controls
+func NewDelRequest(DN string,
+	Controls []Control) *DelRequest {
+	return &DelRequest{
+		DN:       DN,
+		Controls: Controls,
+	}
+}
+
+// Del executes the given delete request
+func (l *Conn) Del(delRequest *DelRequest) error {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	packet.AppendChild(delRequest.encode())
+	if delRequest.Controls != nil {
+		packet.AppendChild(encodeControls(delRequest.Controls))
+	}
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return err
+	}
+	defer l.finishMessage(msgCtx)
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if packet.Children[1].Tag == ApplicationDelResponse {
+		resultCode, resultDescription := getLDAPResultCode(packet)
+		if resultCode != 0 {
+			return NewError(resultCode, errors.New(resultDescription))
+		}
+	} else {
+		log.Printf("Unexpected Response: %d", packet.Children[1].Tag)
+	}
+
+	l.Debug.Printf("%d: returning", msgCtx.id)
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/dn.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/dn.go
new file mode 100644
index 00000000..34e9023a
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/dn.go
@@ -0,0 +1,247 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// File contains DN parsing functionality
+//
+// https://tools.ietf.org/html/rfc4514
+//
+//   distinguishedName = [ relativeDistinguishedName
+//         *( COMMA relativeDistinguishedName ) ]
+//     relativeDistinguishedName = attributeTypeAndValue
+//         *( PLUS attributeTypeAndValue )
+//     attributeTypeAndValue = attributeType EQUALS attributeValue
+//     attributeType = descr / numericoid
+//     attributeValue = string / hexstring
+//
+//     ; The following characters are to be escaped when they appear
+//     ; in the value to be encoded: ESC, one of <escaped>, leading
+//     ; SHARP or SPACE, trailing SPACE, and NULL.
+//     string =   [ ( leadchar / pair ) [ *( stringchar / pair )
+//        ( trailchar / pair ) ] ]
+//
+//     leadchar = LUTF1 / UTFMB
+//     LUTF1 = %x01-1F / %x21 / %x24-2A / %x2D-3A /
+//        %x3D / %x3F-5B / %x5D-7F
+//
+//     trailchar  = TUTF1 / UTFMB
+//     TUTF1 = %x01-1F / %x21 / %x23-2A / %x2D-3A /
+//        %x3D / %x3F-5B / %x5D-7F
+//
+//     stringchar = SUTF1 / UTFMB
+//     SUTF1 = %x01-21 / %x23-2A / %x2D-3A /
+//        %x3D / %x3F-5B / %x5D-7F
+//
+//     pair = ESC ( ESC / special / hexpair )
+//     special = escaped / SPACE / SHARP / EQUALS
+//     escaped = DQUOTE / PLUS / COMMA / SEMI / LANGLE / RANGLE
+//     hexstring = SHARP 1*hexpair
+//     hexpair = HEX HEX
+//
+//  where the productions <descr>, <numericoid>, <COMMA>, <DQUOTE>,
+//  <EQUALS>, <ESC>, <HEX>, <LANGLE>, <NULL>, <PLUS>, <RANGLE>, <SEMI>,
+//  <SPACE>, <SHARP>, and <UTFMB> are defined in [RFC4512].
+//
+
+package ldap
+
+import (
+	"bytes"
+	enchex "encoding/hex"
+	"errors"
+	"fmt"
+	"strings"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// AttributeTypeAndValue represents an attributeTypeAndValue from https://tools.ietf.org/html/rfc4514
+type AttributeTypeAndValue struct {
+	// Type is the attribute type
+	Type string
+	// Value is the attribute value
+	Value string
+}
+
+// RelativeDN represents a relativeDistinguishedName from https://tools.ietf.org/html/rfc4514
+type RelativeDN struct {
+	Attributes []*AttributeTypeAndValue
+}
+
+// DN represents a distinguishedName from https://tools.ietf.org/html/rfc4514
+type DN struct {
+	RDNs []*RelativeDN
+}
+
+// ParseDN returns a distinguishedName or an error
+func ParseDN(str string) (*DN, error) {
+	dn := new(DN)
+	dn.RDNs = make([]*RelativeDN, 0)
+	rdn := new(RelativeDN)
+	rdn.Attributes = make([]*AttributeTypeAndValue, 0)
+	buffer := bytes.Buffer{}
+	attribute := new(AttributeTypeAndValue)
+	escaping := false
+
+	unescapedTrailingSpaces := 0
+	stringFromBuffer := func() string {
+		s := buffer.String()
+		s = s[0 : len(s)-unescapedTrailingSpaces]
+		buffer.Reset()
+		unescapedTrailingSpaces = 0
+		return s
+	}
+
+	for i := 0; i < len(str); i++ {
+		char := str[i]
+		if escaping {
+			unescapedTrailingSpaces = 0
+			escaping = false
+			switch char {
+			case ' ', '"', '#', '+', ',', ';', '<', '=', '>', '\\':
+				buffer.WriteByte(char)
+				continue
+			}
+			// Not a special character, assume hex encoded octet
+			if len(str) == i+1 {
+				return nil, errors.New("Got corrupted escaped character")
+			}
+
+			dst := []byte{0}
+			n, err := enchex.Decode([]byte(dst), []byte(str[i:i+2]))
+			if err != nil {
+				return nil, fmt.Errorf("Failed to decode escaped character: %s", err)
+			} else if n != 1 {
+				return nil, fmt.Errorf("Expected 1 byte when un-escaping, got %d", n)
+			}
+			buffer.WriteByte(dst[0])
+			i++
+		} else if char == '\\' {
+			unescapedTrailingSpaces = 0
+			escaping = true
+		} else if char == '=' {
+			attribute.Type = stringFromBuffer()
+			// Special case: If the first character in the value is # the
+			// following data is BER encoded so we can just fast forward
+			// and decode.
+			if len(str) > i+1 && str[i+1] == '#' {
+				i += 2
+				index := strings.IndexAny(str[i:], ",+")
+				data := str
+				if index > 0 {
+					data = str[i : i+index]
+				} else {
+					data = str[i:]
+				}
+				rawBER, err := enchex.DecodeString(data)
+				if err != nil {
+					return nil, fmt.Errorf("Failed to decode BER encoding: %s", err)
+				}
+				packet := ber.DecodePacket(rawBER)
+				buffer.WriteString(packet.Data.String())
+				i += len(data) - 1
+			}
+		} else if char == ',' || char == '+' {
+			// We're done with this RDN or value, push it
+			if len(attribute.Type) == 0 {
+				return nil, errors.New("incomplete type, value pair")
+			}
+			attribute.Value = stringFromBuffer()
+			rdn.Attributes = append(rdn.Attributes, attribute)
+			attribute = new(AttributeTypeAndValue)
+			if char == ',' {
+				dn.RDNs = append(dn.RDNs, rdn)
+				rdn = new(RelativeDN)
+				rdn.Attributes = make([]*AttributeTypeAndValue, 0)
+			}
+		} else if char == ' ' && buffer.Len() == 0 {
+			// ignore unescaped leading spaces
+			continue
+		} else {
+			if char == ' ' {
+				// Track unescaped spaces in case they are trailing and we need to remove them
+				unescapedTrailingSpaces++
+			} else {
+				// Reset if we see a non-space char
+				unescapedTrailingSpaces = 0
+			}
+			buffer.WriteByte(char)
+		}
+	}
+	if buffer.Len() > 0 {
+		if len(attribute.Type) == 0 {
+			return nil, errors.New("DN ended with incomplete type, value pair")
+		}
+		attribute.Value = stringFromBuffer()
+		rdn.Attributes = append(rdn.Attributes, attribute)
+		dn.RDNs = append(dn.RDNs, rdn)
+	}
+	return dn, nil
+}
+
+// Equal returns true if the DNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch).
+// Returns true if they have the same number of relative distinguished names
+// and corresponding relative distinguished names (by position) are the same.
+func (d *DN) Equal(other *DN) bool {
+	if len(d.RDNs) != len(other.RDNs) {
+		return false
+	}
+	for i := range d.RDNs {
+		if !d.RDNs[i].Equal(other.RDNs[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// AncestorOf returns true if the other DN consists of at least one RDN followed by all the RDNs of the current DN.
+// "ou=widgets,o=acme.com" is an ancestor of "ou=sprockets,ou=widgets,o=acme.com"
+// "ou=widgets,o=acme.com" is not an ancestor of "ou=sprockets,ou=widgets,o=foo.com"
+// "ou=widgets,o=acme.com" is not an ancestor of "ou=widgets,o=acme.com"
+func (d *DN) AncestorOf(other *DN) bool {
+	if len(d.RDNs) >= len(other.RDNs) {
+		return false
+	}
+	// Take the last `len(d.RDNs)` RDNs from the other DN to compare against
+	otherRDNs := other.RDNs[len(other.RDNs)-len(d.RDNs):]
+	for i := range d.RDNs {
+		if !d.RDNs[i].Equal(otherRDNs[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// Equal returns true if the RelativeDNs are equal as defined by rfc4517 4.2.15 (distinguishedNameMatch).
+// Relative distinguished names are the same if and only if they have the same number of AttributeTypeAndValues
+// and each attribute of the first RDN is the same as the attribute of the second RDN with the same attribute type.
+// The order of attributes is not significant.
+// Case of attribute types is not significant.
+func (r *RelativeDN) Equal(other *RelativeDN) bool {
+	if len(r.Attributes) != len(other.Attributes) {
+		return false
+	}
+	return r.hasAllAttributes(other.Attributes) && other.hasAllAttributes(r.Attributes)
+}
+
+func (r *RelativeDN) hasAllAttributes(attrs []*AttributeTypeAndValue) bool {
+	for _, attr := range attrs {
+		found := false
+		for _, myattr := range r.Attributes {
+			if myattr.Equal(attr) {
+				found = true
+				break
+			}
+		}
+		if !found {
+			return false
+		}
+	}
+	return true
+}
+
+// Equal returns true if the AttributeTypeAndValue is equivalent to the specified AttributeTypeAndValue
+// Case of the attribute type is not significant
+func (a *AttributeTypeAndValue) Equal(other *AttributeTypeAndValue) bool {
+	return strings.EqualFold(a.Type, other.Type) && a.Value == other.Value
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/doc.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/doc.go
new file mode 100644
index 00000000..f20d39bc
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/doc.go
@@ -0,0 +1,4 @@
+/*
+Package ldap provides basic LDAP v3 functionality.
+*/
+package ldap
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/error.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/error.go
new file mode 100644
index 00000000..4cccb537
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/error.go
@@ -0,0 +1,155 @@
+package ldap
+
+import (
+	"fmt"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// LDAP Result Codes
+const (
+	LDAPResultSuccess                      = 0
+	LDAPResultOperationsError              = 1
+	LDAPResultProtocolError                = 2
+	LDAPResultTimeLimitExceeded            = 3
+	LDAPResultSizeLimitExceeded            = 4
+	LDAPResultCompareFalse                 = 5
+	LDAPResultCompareTrue                  = 6
+	LDAPResultAuthMethodNotSupported       = 7
+	LDAPResultStrongAuthRequired           = 8
+	LDAPResultReferral                     = 10
+	LDAPResultAdminLimitExceeded           = 11
+	LDAPResultUnavailableCriticalExtension = 12
+	LDAPResultConfidentialityRequired      = 13
+	LDAPResultSaslBindInProgress           = 14
+	LDAPResultNoSuchAttribute              = 16
+	LDAPResultUndefinedAttributeType       = 17
+	LDAPResultInappropriateMatching        = 18
+	LDAPResultConstraintViolation          = 19
+	LDAPResultAttributeOrValueExists       = 20
+	LDAPResultInvalidAttributeSyntax       = 21
+	LDAPResultNoSuchObject                 = 32
+	LDAPResultAliasProblem                 = 33
+	LDAPResultInvalidDNSyntax              = 34
+	LDAPResultAliasDereferencingProblem    = 36
+	LDAPResultInappropriateAuthentication  = 48
+	LDAPResultInvalidCredentials           = 49
+	LDAPResultInsufficientAccessRights     = 50
+	LDAPResultBusy                         = 51
+	LDAPResultUnavailable                  = 52
+	LDAPResultUnwillingToPerform           = 53
+	LDAPResultLoopDetect                   = 54
+	LDAPResultNamingViolation              = 64
+	LDAPResultObjectClassViolation         = 65
+	LDAPResultNotAllowedOnNonLeaf          = 66
+	LDAPResultNotAllowedOnRDN              = 67
+	LDAPResultEntryAlreadyExists           = 68
+	LDAPResultObjectClassModsProhibited    = 69
+	LDAPResultAffectsMultipleDSAs          = 71
+	LDAPResultOther                        = 80
+
+	ErrorNetwork            = 200
+	ErrorFilterCompile      = 201
+	ErrorFilterDecompile    = 202
+	ErrorDebugging          = 203
+	ErrorUnexpectedMessage  = 204
+	ErrorUnexpectedResponse = 205
+)
+
+// LDAPResultCodeMap contains string descriptions for LDAP error codes
+var LDAPResultCodeMap = map[uint8]string{
+	LDAPResultSuccess:                      "Success",
+	LDAPResultOperationsError:              "Operations Error",
+	LDAPResultProtocolError:                "Protocol Error",
+	LDAPResultTimeLimitExceeded:            "Time Limit Exceeded",
+	LDAPResultSizeLimitExceeded:            "Size Limit Exceeded",
+	LDAPResultCompareFalse:                 "Compare False",
+	LDAPResultCompareTrue:                  "Compare True",
+	LDAPResultAuthMethodNotSupported:       "Auth Method Not Supported",
+	LDAPResultStrongAuthRequired:           "Strong Auth Required",
+	LDAPResultReferral:                     "Referral",
+	LDAPResultAdminLimitExceeded:           "Admin Limit Exceeded",
+	LDAPResultUnavailableCriticalExtension: "Unavailable Critical Extension",
+	LDAPResultConfidentialityRequired:      "Confidentiality Required",
+	LDAPResultSaslBindInProgress:           "Sasl Bind In Progress",
+	LDAPResultNoSuchAttribute:              "No Such Attribute",
+	LDAPResultUndefinedAttributeType:       "Undefined Attribute Type",
+	LDAPResultInappropriateMatching:        "Inappropriate Matching",
+	LDAPResultConstraintViolation:          "Constraint Violation",
+	LDAPResultAttributeOrValueExists:       "Attribute Or Value Exists",
+	LDAPResultInvalidAttributeSyntax:       "Invalid Attribute Syntax",
+	LDAPResultNoSuchObject:                 "No Such Object",
+	LDAPResultAliasProblem:                 "Alias Problem",
+	LDAPResultInvalidDNSyntax:              "Invalid DN Syntax",
+	LDAPResultAliasDereferencingProblem:    "Alias Dereferencing Problem",
+	LDAPResultInappropriateAuthentication:  "Inappropriate Authentication",
+	LDAPResultInvalidCredentials:           "Invalid Credentials",
+	LDAPResultInsufficientAccessRights:     "Insufficient Access Rights",
+	LDAPResultBusy:                         "Busy",
+	LDAPResultUnavailable:                  "Unavailable",
+	LDAPResultUnwillingToPerform:           "Unwilling To Perform",
+	LDAPResultLoopDetect:                   "Loop Detect",
+	LDAPResultNamingViolation:              "Naming Violation",
+	LDAPResultObjectClassViolation:         "Object Class Violation",
+	LDAPResultNotAllowedOnNonLeaf:          "Not Allowed On Non Leaf",
+	LDAPResultNotAllowedOnRDN:              "Not Allowed On RDN",
+	LDAPResultEntryAlreadyExists:           "Entry Already Exists",
+	LDAPResultObjectClassModsProhibited:    "Object Class Mods Prohibited",
+	LDAPResultAffectsMultipleDSAs:          "Affects Multiple DSAs",
+	LDAPResultOther:                        "Other",
+
+	ErrorNetwork:            "Network Error",
+	ErrorFilterCompile:      "Filter Compile Error",
+	ErrorFilterDecompile:    "Filter Decompile Error",
+	ErrorDebugging:          "Debugging Error",
+	ErrorUnexpectedMessage:  "Unexpected Message",
+	ErrorUnexpectedResponse: "Unexpected Response",
+}
+
+func getLDAPResultCode(packet *ber.Packet) (code uint8, description string) {
+	if packet == nil {
+		return ErrorUnexpectedResponse, "Empty packet"
+	} else if len(packet.Children) >= 2 {
+		response := packet.Children[1]
+		if response == nil {
+			return ErrorUnexpectedResponse, "Empty response in packet"
+		}
+		if response.ClassType == ber.ClassApplication && response.TagType == ber.TypeConstructed && len(response.Children) >= 3 {
+			// Children[1].Children[2] is the diagnosticMessage which is guaranteed to exist as seen here: https://tools.ietf.org/html/rfc4511#section-4.1.9
+			return uint8(response.Children[0].Value.(int64)), response.Children[2].Value.(string)
+		}
+	}
+
+	return ErrorNetwork, "Invalid packet format"
+}
+
+// Error holds LDAP error information
+type Error struct {
+	// Err is the underlying error
+	Err error
+	// ResultCode is the LDAP error code
+	ResultCode uint8
+}
+
+func (e *Error) Error() string {
+	return fmt.Sprintf("LDAP Result Code %d %q: %s", e.ResultCode, LDAPResultCodeMap[e.ResultCode], e.Err.Error())
+}
+
+// NewError creates an LDAP error with the given code and underlying error
+func NewError(resultCode uint8, err error) error {
+	return &Error{ResultCode: resultCode, Err: err}
+}
+
+// IsErrorWithCode returns true if the given error is an LDAP error with the given result code
+func IsErrorWithCode(err error, desiredResultCode uint8) bool {
+	if err == nil {
+		return false
+	}
+
+	serverError, ok := err.(*Error)
+	if !ok {
+		return false
+	}
+
+	return serverError.ResultCode == desiredResultCode
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/filter.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/filter.go
new file mode 100644
index 00000000..3858a286
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/filter.go
@@ -0,0 +1,469 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ldap
+
+import (
+	"bytes"
+	hexpac "encoding/hex"
+	"errors"
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// Filter choices
+const (
+	FilterAnd             = 0
+	FilterOr              = 1
+	FilterNot             = 2
+	FilterEqualityMatch   = 3
+	FilterSubstrings      = 4
+	FilterGreaterOrEqual  = 5
+	FilterLessOrEqual     = 6
+	FilterPresent         = 7
+	FilterApproxMatch     = 8
+	FilterExtensibleMatch = 9
+)
+
+// FilterMap contains human readable descriptions of Filter choices
+var FilterMap = map[uint64]string{
+	FilterAnd:             "And",
+	FilterOr:              "Or",
+	FilterNot:             "Not",
+	FilterEqualityMatch:   "Equality Match",
+	FilterSubstrings:      "Substrings",
+	FilterGreaterOrEqual:  "Greater Or Equal",
+	FilterLessOrEqual:     "Less Or Equal",
+	FilterPresent:         "Present",
+	FilterApproxMatch:     "Approx Match",
+	FilterExtensibleMatch: "Extensible Match",
+}
+
+// SubstringFilter options
+const (
+	FilterSubstringsInitial = 0
+	FilterSubstringsAny     = 1
+	FilterSubstringsFinal   = 2
+)
+
+// FilterSubstringsMap contains human readable descriptions of SubstringFilter choices
+var FilterSubstringsMap = map[uint64]string{
+	FilterSubstringsInitial: "Substrings Initial",
+	FilterSubstringsAny:     "Substrings Any",
+	FilterSubstringsFinal:   "Substrings Final",
+}
+
+// MatchingRuleAssertion choices
+const (
+	MatchingRuleAssertionMatchingRule = 1
+	MatchingRuleAssertionType         = 2
+	MatchingRuleAssertionMatchValue   = 3
+	MatchingRuleAssertionDNAttributes = 4
+)
+
+// MatchingRuleAssertionMap contains human readable descriptions of MatchingRuleAssertion choices
+var MatchingRuleAssertionMap = map[uint64]string{
+	MatchingRuleAssertionMatchingRule: "Matching Rule Assertion Matching Rule",
+	MatchingRuleAssertionType:         "Matching Rule Assertion Type",
+	MatchingRuleAssertionMatchValue:   "Matching Rule Assertion Match Value",
+	MatchingRuleAssertionDNAttributes: "Matching Rule Assertion DN Attributes",
+}
+
+// CompileFilter converts a string representation of a filter into a BER-encoded packet
+func CompileFilter(filter string) (*ber.Packet, error) {
+	if len(filter) == 0 || filter[0] != '(' {
+		return nil, NewError(ErrorFilterCompile, errors.New("ldap: filter does not start with an '('"))
+	}
+	packet, pos, err := compileFilter(filter, 1)
+	if err != nil {
+		return nil, err
+	}
+	switch {
+	case pos > len(filter):
+		return nil, NewError(ErrorFilterCompile, errors.New("ldap: unexpected end of filter"))
+	case pos < len(filter):
+		return nil, NewError(ErrorFilterCompile, errors.New("ldap: finished compiling filter with extra at end: "+fmt.Sprint(filter[pos:])))
+	}
+	return packet, nil
+}
+
+// DecompileFilter converts a packet representation of a filter into a string representation
+func DecompileFilter(packet *ber.Packet) (ret string, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = NewError(ErrorFilterDecompile, errors.New("ldap: error decompiling filter"))
+		}
+	}()
+	ret = "("
+	err = nil
+	childStr := ""
+
+	switch packet.Tag {
+	case FilterAnd:
+		ret += "&"
+		for _, child := range packet.Children {
+			childStr, err = DecompileFilter(child)
+			if err != nil {
+				return
+			}
+			ret += childStr
+		}
+	case FilterOr:
+		ret += "|"
+		for _, child := range packet.Children {
+			childStr, err = DecompileFilter(child)
+			if err != nil {
+				return
+			}
+			ret += childStr
+		}
+	case FilterNot:
+		ret += "!"
+		childStr, err = DecompileFilter(packet.Children[0])
+		if err != nil {
+			return
+		}
+		ret += childStr
+
+	case FilterSubstrings:
+		ret += ber.DecodeString(packet.Children[0].Data.Bytes())
+		ret += "="
+		for i, child := range packet.Children[1].Children {
+			if i == 0 && child.Tag != FilterSubstringsInitial {
+				ret += "*"
+			}
+			ret += EscapeFilter(ber.DecodeString(child.Data.Bytes()))
+			if child.Tag != FilterSubstringsFinal {
+				ret += "*"
+			}
+		}
+	case FilterEqualityMatch:
+		ret += ber.DecodeString(packet.Children[0].Data.Bytes())
+		ret += "="
+		ret += EscapeFilter(ber.DecodeString(packet.Children[1].Data.Bytes()))
+	case FilterGreaterOrEqual:
+		ret += ber.DecodeString(packet.Children[0].Data.Bytes())
+		ret += ">="
+		ret += EscapeFilter(ber.DecodeString(packet.Children[1].Data.Bytes()))
+	case FilterLessOrEqual:
+		ret += ber.DecodeString(packet.Children[0].Data.Bytes())
+		ret += "<="
+		ret += EscapeFilter(ber.DecodeString(packet.Children[1].Data.Bytes()))
+	case FilterPresent:
+		ret += ber.DecodeString(packet.Data.Bytes())
+		ret += "=*"
+	case FilterApproxMatch:
+		ret += ber.DecodeString(packet.Children[0].Data.Bytes())
+		ret += "~="
+		ret += EscapeFilter(ber.DecodeString(packet.Children[1].Data.Bytes()))
+	case FilterExtensibleMatch:
+		attr := ""
+		dnAttributes := false
+		matchingRule := ""
+		value := ""
+
+		for _, child := range packet.Children {
+			switch child.Tag {
+			case MatchingRuleAssertionMatchingRule:
+				matchingRule = ber.DecodeString(child.Data.Bytes())
+			case MatchingRuleAssertionType:
+				attr = ber.DecodeString(child.Data.Bytes())
+			case MatchingRuleAssertionMatchValue:
+				value = ber.DecodeString(child.Data.Bytes())
+			case MatchingRuleAssertionDNAttributes:
+				dnAttributes = child.Value.(bool)
+			}
+		}
+
+		if len(attr) > 0 {
+			ret += attr
+		}
+		if dnAttributes {
+			ret += ":dn"
+		}
+		if len(matchingRule) > 0 {
+			ret += ":"
+			ret += matchingRule
+		}
+		ret += ":="
+		ret += EscapeFilter(value)
+	}
+
+	ret += ")"
+	return
+}
+
+func compileFilterSet(filter string, pos int, parent *ber.Packet) (int, error) {
+	for pos < len(filter) && filter[pos] == '(' {
+		child, newPos, err := compileFilter(filter, pos+1)
+		if err != nil {
+			return pos, err
+		}
+		pos = newPos
+		parent.AppendChild(child)
+	}
+	if pos == len(filter) {
+		return pos, NewError(ErrorFilterCompile, errors.New("ldap: unexpected end of filter"))
+	}
+
+	return pos + 1, nil
+}
+
+func compileFilter(filter string, pos int) (*ber.Packet, int, error) {
+	var (
+		packet *ber.Packet
+		err    error
+	)
+
+	defer func() {
+		if r := recover(); r != nil {
+			err = NewError(ErrorFilterCompile, errors.New("ldap: error compiling filter"))
+		}
+	}()
+	newPos := pos
+
+	currentRune, currentWidth := utf8.DecodeRuneInString(filter[newPos:])
+
+	switch currentRune {
+	case utf8.RuneError:
+		return nil, 0, NewError(ErrorFilterCompile, fmt.Errorf("ldap: error reading rune at position %d", newPos))
+	case '(':
+		packet, newPos, err = compileFilter(filter, pos+currentWidth)
+		newPos++
+		return packet, newPos, err
+	case '&':
+		packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterAnd, nil, FilterMap[FilterAnd])
+		newPos, err = compileFilterSet(filter, pos+currentWidth, packet)
+		return packet, newPos, err
+	case '|':
+		packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterOr, nil, FilterMap[FilterOr])
+		newPos, err = compileFilterSet(filter, pos+currentWidth, packet)
+		return packet, newPos, err
+	case '!':
+		packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterNot, nil, FilterMap[FilterNot])
+		var child *ber.Packet
+		child, newPos, err = compileFilter(filter, pos+currentWidth)
+		packet.AppendChild(child)
+		return packet, newPos, err
+	default:
+		const (
+			stateReadingAttr                   = 0
+			stateReadingExtensibleMatchingRule = 1
+			stateReadingCondition              = 2
+		)
+
+		state := stateReadingAttr
+
+		attribute := ""
+		extensibleDNAttributes := false
+		extensibleMatchingRule := ""
+		condition := ""
+
+		for newPos < len(filter) {
+			remainingFilter := filter[newPos:]
+			currentRune, currentWidth = utf8.DecodeRuneInString(remainingFilter)
+			if currentRune == ')' {
+				break
+			}
+			if currentRune == utf8.RuneError {
+				return packet, newPos, NewError(ErrorFilterCompile, fmt.Errorf("ldap: error reading rune at position %d", newPos))
+			}
+
+			switch state {
+			case stateReadingAttr:
+				switch {
+				// Extensible rule, with only DN-matching
+				case currentRune == ':' && strings.HasPrefix(remainingFilter, ":dn:="):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterExtensibleMatch, nil, FilterMap[FilterExtensibleMatch])
+					extensibleDNAttributes = true
+					state = stateReadingCondition
+					newPos += 5
+
+				// Extensible rule, with DN-matching and a matching OID
+				case currentRune == ':' && strings.HasPrefix(remainingFilter, ":dn:"):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterExtensibleMatch, nil, FilterMap[FilterExtensibleMatch])
+					extensibleDNAttributes = true
+					state = stateReadingExtensibleMatchingRule
+					newPos += 4
+
+				// Extensible rule, with attr only
+				case currentRune == ':' && strings.HasPrefix(remainingFilter, ":="):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterExtensibleMatch, nil, FilterMap[FilterExtensibleMatch])
+					state = stateReadingCondition
+					newPos += 2
+
+				// Extensible rule, with no DN attribute matching
+				case currentRune == ':':
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterExtensibleMatch, nil, FilterMap[FilterExtensibleMatch])
+					state = stateReadingExtensibleMatchingRule
+					newPos++
+
+				// Equality condition
+				case currentRune == '=':
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterEqualityMatch, nil, FilterMap[FilterEqualityMatch])
+					state = stateReadingCondition
+					newPos++
+
+				// Greater-than or equal
+				case currentRune == '>' && strings.HasPrefix(remainingFilter, ">="):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterGreaterOrEqual, nil, FilterMap[FilterGreaterOrEqual])
+					state = stateReadingCondition
+					newPos += 2
+
+				// Less-than or equal
+				case currentRune == '<' && strings.HasPrefix(remainingFilter, "<="):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterLessOrEqual, nil, FilterMap[FilterLessOrEqual])
+					state = stateReadingCondition
+					newPos += 2
+
+				// Approx
+				case currentRune == '~' && strings.HasPrefix(remainingFilter, "~="):
+					packet = ber.Encode(ber.ClassContext, ber.TypeConstructed, FilterApproxMatch, nil, FilterMap[FilterApproxMatch])
+					state = stateReadingCondition
+					newPos += 2
+
+				// Still reading the attribute name
+				default:
+					attribute += fmt.Sprintf("%c", currentRune)
+					newPos += currentWidth
+				}
+
+			case stateReadingExtensibleMatchingRule:
+				switch {
+
+				// Matching rule OID is done
+				case currentRune == ':' && strings.HasPrefix(remainingFilter, ":="):
+					state = stateReadingCondition
+					newPos += 2
+
+				// Still reading the matching rule oid
+				default:
+					extensibleMatchingRule += fmt.Sprintf("%c", currentRune)
+					newPos += currentWidth
+				}
+
+			case stateReadingCondition:
+				// append to the condition
+				condition += fmt.Sprintf("%c", currentRune)
+				newPos += currentWidth
+			}
+		}
+
+		if newPos == len(filter) {
+			err = NewError(ErrorFilterCompile, errors.New("ldap: unexpected end of filter"))
+			return packet, newPos, err
+		}
+		if packet == nil {
+			err = NewError(ErrorFilterCompile, errors.New("ldap: error parsing filter"))
+			return packet, newPos, err
+		}
+
+		switch {
+		case packet.Tag == FilterExtensibleMatch:
+			// MatchingRuleAssertion ::= SEQUENCE {
+			//         matchingRule    [1] MatchingRuleID OPTIONAL,
+			//         type            [2] AttributeDescription OPTIONAL,
+			//         matchValue      [3] AssertionValue,
+			//         dnAttributes    [4] BOOLEAN DEFAULT FALSE
+			// }
+
+			// Include the matching rule oid, if specified
+			if len(extensibleMatchingRule) > 0 {
+				packet.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, MatchingRuleAssertionMatchingRule, extensibleMatchingRule, MatchingRuleAssertionMap[MatchingRuleAssertionMatchingRule]))
+			}
+
+			// Include the attribute, if specified
+			if len(attribute) > 0 {
+				packet.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, MatchingRuleAssertionType, attribute, MatchingRuleAssertionMap[MatchingRuleAssertionType]))
+			}
+
+			// Add the value (only required child)
+			encodedString, encodeErr := escapedStringToEncodedBytes(condition)
+			if encodeErr != nil {
+				return packet, newPos, encodeErr
+			}
+			packet.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, MatchingRuleAssertionMatchValue, encodedString, MatchingRuleAssertionMap[MatchingRuleAssertionMatchValue]))
+
+			// Defaults to false, so only include in the sequence if true
+			if extensibleDNAttributes {
+				packet.AppendChild(ber.NewBoolean(ber.ClassContext, ber.TypePrimitive, MatchingRuleAssertionDNAttributes, extensibleDNAttributes, MatchingRuleAssertionMap[MatchingRuleAssertionDNAttributes]))
+			}
+
+		case packet.Tag == FilterEqualityMatch && condition == "*":
+			packet = ber.NewString(ber.ClassContext, ber.TypePrimitive, FilterPresent, attribute, FilterMap[FilterPresent])
+		case packet.Tag == FilterEqualityMatch && strings.Contains(condition, "*"):
+			packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, attribute, "Attribute"))
+			packet.Tag = FilterSubstrings
+			packet.Description = FilterMap[uint64(packet.Tag)]
+			seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Substrings")
+			parts := strings.Split(condition, "*")
+			for i, part := range parts {
+				if part == "" {
+					continue
+				}
+				var tag ber.Tag
+				switch i {
+				case 0:
+					tag = FilterSubstringsInitial
+				case len(parts) - 1:
+					tag = FilterSubstringsFinal
+				default:
+					tag = FilterSubstringsAny
+				}
+				encodedString, encodeErr := escapedStringToEncodedBytes(part)
+				if encodeErr != nil {
+					return packet, newPos, encodeErr
+				}
+				seq.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, tag, encodedString, FilterSubstringsMap[uint64(tag)]))
+			}
+			packet.AppendChild(seq)
+		default:
+			encodedString, encodeErr := escapedStringToEncodedBytes(condition)
+			if encodeErr != nil {
+				return packet, newPos, encodeErr
+			}
+			packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, attribute, "Attribute"))
+			packet.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, encodedString, "Condition"))
+		}
+
+		newPos += currentWidth
+		return packet, newPos, err
+	}
+}
+
+// Convert from "ABC\xx\xx\xx" form to literal bytes for transport
+func escapedStringToEncodedBytes(escapedString string) (string, error) {
+	var buffer bytes.Buffer
+	i := 0
+	for i < len(escapedString) {
+		currentRune, currentWidth := utf8.DecodeRuneInString(escapedString[i:])
+		if currentRune == utf8.RuneError {
+			return "", NewError(ErrorFilterCompile, fmt.Errorf("ldap: error reading rune at position %d", i))
+		}
+
+		// Check for escaped hex characters and convert them to their literal value for transport.
+		if currentRune == '\\' {
+			// http://tools.ietf.org/search/rfc4515
+			// \ (%x5C) is not a valid character unless it is followed by two HEX characters due to not
+			// being a member of UTF1SUBSET.
+			if i+2 > len(escapedString) {
+				return "", NewError(ErrorFilterCompile, errors.New("ldap: missing characters for escape in filter"))
+			}
+			escByte, decodeErr := hexpac.DecodeString(escapedString[i+1 : i+3])
+			if decodeErr != nil {
+				return "", NewError(ErrorFilterCompile, errors.New("ldap: invalid characters for escape in filter"))
+			}
+			buffer.WriteByte(escByte[0])
+			i += 2 // +1 from end of loop, so 3 total for \xx.
+		} else {
+			buffer.WriteRune(currentRune)
+		}
+
+		i += currentWidth
+	}
+	return buffer.String(), nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/ldap.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/ldap.go
new file mode 100644
index 00000000..49692475
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/ldap.go
@@ -0,0 +1,320 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ldap
+
+import (
+	"errors"
+	"io/ioutil"
+	"os"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// LDAP Application Codes
+const (
+	ApplicationBindRequest           = 0
+	ApplicationBindResponse          = 1
+	ApplicationUnbindRequest         = 2
+	ApplicationSearchRequest         = 3
+	ApplicationSearchResultEntry     = 4
+	ApplicationSearchResultDone      = 5
+	ApplicationModifyRequest         = 6
+	ApplicationModifyResponse        = 7
+	ApplicationAddRequest            = 8
+	ApplicationAddResponse           = 9
+	ApplicationDelRequest            = 10
+	ApplicationDelResponse           = 11
+	ApplicationModifyDNRequest       = 12
+	ApplicationModifyDNResponse      = 13
+	ApplicationCompareRequest        = 14
+	ApplicationCompareResponse       = 15
+	ApplicationAbandonRequest        = 16
+	ApplicationSearchResultReference = 19
+	ApplicationExtendedRequest       = 23
+	ApplicationExtendedResponse      = 24
+)
+
+// ApplicationMap contains human readable descriptions of LDAP Application Codes
+var ApplicationMap = map[uint8]string{
+	ApplicationBindRequest:           "Bind Request",
+	ApplicationBindResponse:          "Bind Response",
+	ApplicationUnbindRequest:         "Unbind Request",
+	ApplicationSearchRequest:         "Search Request",
+	ApplicationSearchResultEntry:     "Search Result Entry",
+	ApplicationSearchResultDone:      "Search Result Done",
+	ApplicationModifyRequest:         "Modify Request",
+	ApplicationModifyResponse:        "Modify Response",
+	ApplicationAddRequest:            "Add Request",
+	ApplicationAddResponse:           "Add Response",
+	ApplicationDelRequest:            "Del Request",
+	ApplicationDelResponse:           "Del Response",
+	ApplicationModifyDNRequest:       "Modify DN Request",
+	ApplicationModifyDNResponse:      "Modify DN Response",
+	ApplicationCompareRequest:        "Compare Request",
+	ApplicationCompareResponse:       "Compare Response",
+	ApplicationAbandonRequest:        "Abandon Request",
+	ApplicationSearchResultReference: "Search Result Reference",
+	ApplicationExtendedRequest:       "Extended Request",
+	ApplicationExtendedResponse:      "Extended Response",
+}
+
+// Ldap Behera Password Policy Draft 10 (https://tools.ietf.org/html/draft-behera-ldap-password-policy-10)
+const (
+	BeheraPasswordExpired             = 0
+	BeheraAccountLocked               = 1
+	BeheraChangeAfterReset            = 2
+	BeheraPasswordModNotAllowed       = 3
+	BeheraMustSupplyOldPassword       = 4
+	BeheraInsufficientPasswordQuality = 5
+	BeheraPasswordTooShort            = 6
+	BeheraPasswordTooYoung            = 7
+	BeheraPasswordInHistory           = 8
+)
+
+// BeheraPasswordPolicyErrorMap contains human readable descriptions of Behera Password Policy error codes
+var BeheraPasswordPolicyErrorMap = map[int8]string{
+	BeheraPasswordExpired:             "Password expired",
+	BeheraAccountLocked:               "Account locked",
+	BeheraChangeAfterReset:            "Password must be changed",
+	BeheraPasswordModNotAllowed:       "Policy prevents password modification",
+	BeheraMustSupplyOldPassword:       "Policy requires old password in order to change password",
+	BeheraInsufficientPasswordQuality: "Password fails quality checks",
+	BeheraPasswordTooShort:            "Password is too short for policy",
+	BeheraPasswordTooYoung:            "Password has been changed too recently",
+	BeheraPasswordInHistory:           "New password is in list of old passwords",
+}
+
+// Adds descriptions to an LDAP Response packet for debugging
+func addLDAPDescriptions(packet *ber.Packet) (err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = NewError(ErrorDebugging, errors.New("ldap: cannot process packet to add descriptions"))
+		}
+	}()
+	packet.Description = "LDAP Response"
+	packet.Children[0].Description = "Message ID"
+
+	application := uint8(packet.Children[1].Tag)
+	packet.Children[1].Description = ApplicationMap[application]
+
+	switch application {
+	case ApplicationBindRequest:
+		addRequestDescriptions(packet)
+	case ApplicationBindResponse:
+		addDefaultLDAPResponseDescriptions(packet)
+	case ApplicationUnbindRequest:
+		addRequestDescriptions(packet)
+	case ApplicationSearchRequest:
+		addRequestDescriptions(packet)
+	case ApplicationSearchResultEntry:
+		packet.Children[1].Children[0].Description = "Object Name"
+		packet.Children[1].Children[1].Description = "Attributes"
+		for _, child := range packet.Children[1].Children[1].Children {
+			child.Description = "Attribute"
+			child.Children[0].Description = "Attribute Name"
+			child.Children[1].Description = "Attribute Values"
+			for _, grandchild := range child.Children[1].Children {
+				grandchild.Description = "Attribute Value"
+			}
+		}
+		if len(packet.Children) == 3 {
+			addControlDescriptions(packet.Children[2])
+		}
+	case ApplicationSearchResultDone:
+		addDefaultLDAPResponseDescriptions(packet)
+	case ApplicationModifyRequest:
+		addRequestDescriptions(packet)
+	case ApplicationModifyResponse:
+	case ApplicationAddRequest:
+		addRequestDescriptions(packet)
+	case ApplicationAddResponse:
+	case ApplicationDelRequest:
+		addRequestDescriptions(packet)
+	case ApplicationDelResponse:
+	case ApplicationModifyDNRequest:
+		addRequestDescriptions(packet)
+	case ApplicationModifyDNResponse:
+	case ApplicationCompareRequest:
+		addRequestDescriptions(packet)
+	case ApplicationCompareResponse:
+	case ApplicationAbandonRequest:
+		addRequestDescriptions(packet)
+	case ApplicationSearchResultReference:
+	case ApplicationExtendedRequest:
+		addRequestDescriptions(packet)
+	case ApplicationExtendedResponse:
+	}
+
+	return nil
+}
+
+func addControlDescriptions(packet *ber.Packet) {
+	packet.Description = "Controls"
+	for _, child := range packet.Children {
+		var value *ber.Packet
+		controlType := ""
+		child.Description = "Control"
+		switch len(child.Children) {
+		case 0:
+			// at least one child is required for control type
+			continue
+
+		case 1:
+			// just type, no criticality or value
+			controlType = child.Children[0].Value.(string)
+			child.Children[0].Description = "Control Type (" + ControlTypeMap[controlType] + ")"
+
+		case 2:
+			controlType = child.Children[0].Value.(string)
+			child.Children[0].Description = "Control Type (" + ControlTypeMap[controlType] + ")"
+			// Children[1] could be criticality or value (both are optional)
+			// duck-type on whether this is a boolean
+			if _, ok := child.Children[1].Value.(bool); ok {
+				child.Children[1].Description = "Criticality"
+			} else {
+				child.Children[1].Description = "Control Value"
+				value = child.Children[1]
+			}
+
+		case 3:
+			// criticality and value present
+			controlType = child.Children[0].Value.(string)
+			child.Children[0].Description = "Control Type (" + ControlTypeMap[controlType] + ")"
+			child.Children[1].Description = "Criticality"
+			child.Children[2].Description = "Control Value"
+			value = child.Children[2]
+
+		default:
+			// more than 3 children is invalid
+			continue
+		}
+		if value == nil {
+			continue
+		}
+		switch controlType {
+		case ControlTypePaging:
+			value.Description += " (Paging)"
+			if value.Value != nil {
+				valueChildren := ber.DecodePacket(value.Data.Bytes())
+				value.Data.Truncate(0)
+				value.Value = nil
+				valueChildren.Children[1].Value = valueChildren.Children[1].Data.Bytes()
+				value.AppendChild(valueChildren)
+			}
+			value.Children[0].Description = "Real Search Control Value"
+			value.Children[0].Children[0].Description = "Paging Size"
+			value.Children[0].Children[1].Description = "Cookie"
+
+		case ControlTypeBeheraPasswordPolicy:
+			value.Description += " (Password Policy - Behera Draft)"
+			if value.Value != nil {
+				valueChildren := ber.DecodePacket(value.Data.Bytes())
+				value.Data.Truncate(0)
+				value.Value = nil
+				value.AppendChild(valueChildren)
+			}
+			sequence := value.Children[0]
+			for _, child := range sequence.Children {
+				if child.Tag == 0 {
+					//Warning
+					warningPacket := child.Children[0]
+					packet := ber.DecodePacket(warningPacket.Data.Bytes())
+					val, ok := packet.Value.(int64)
+					if ok {
+						if warningPacket.Tag == 0 {
+							//timeBeforeExpiration
+							value.Description += " (TimeBeforeExpiration)"
+							warningPacket.Value = val
+						} else if warningPacket.Tag == 1 {
+							//graceAuthNsRemaining
+							value.Description += " (GraceAuthNsRemaining)"
+							warningPacket.Value = val
+						}
+					}
+				} else if child.Tag == 1 {
+					// Error
+					packet := ber.DecodePacket(child.Data.Bytes())
+					val, ok := packet.Value.(int8)
+					if !ok {
+						val = -1
+					}
+					child.Description = "Error"
+					child.Value = val
+				}
+			}
+		}
+	}
+}
+
+func addRequestDescriptions(packet *ber.Packet) {
+	packet.Description = "LDAP Request"
+	packet.Children[0].Description = "Message ID"
+	packet.Children[1].Description = ApplicationMap[uint8(packet.Children[1].Tag)]
+	if len(packet.Children) == 3 {
+		addControlDescriptions(packet.Children[2])
+	}
+}
+
+func addDefaultLDAPResponseDescriptions(packet *ber.Packet) {
+	resultCode, _ := getLDAPResultCode(packet)
+	packet.Children[1].Children[0].Description = "Result Code (" + LDAPResultCodeMap[resultCode] + ")"
+	packet.Children[1].Children[1].Description = "Matched DN"
+	packet.Children[1].Children[2].Description = "Error Message"
+	if len(packet.Children[1].Children) > 3 {
+		packet.Children[1].Children[3].Description = "Referral"
+	}
+	if len(packet.Children) == 3 {
+		addControlDescriptions(packet.Children[2])
+	}
+}
+
+// DebugBinaryFile reads and prints packets from the given filename
+func DebugBinaryFile(fileName string) error {
+	file, err := ioutil.ReadFile(fileName)
+	if err != nil {
+		return NewError(ErrorDebugging, err)
+	}
+	ber.PrintBytes(os.Stdout, file, "")
+	packet := ber.DecodePacket(file)
+	addLDAPDescriptions(packet)
+	ber.PrintPacket(packet)
+
+	return nil
+}
+
+var hex = "0123456789abcdef"
+
+func mustEscape(c byte) bool {
+	return c > 0x7f || c == '(' || c == ')' || c == '\\' || c == '*' || c == 0
+}
+
+// EscapeFilter escapes from the provided LDAP filter string the special
+// characters in the set `()*\` and those out of the range 0 < c < 0x80,
+// as defined in RFC4515.
+func EscapeFilter(filter string) string {
+	escape := 0
+	for i := 0; i < len(filter); i++ {
+		if mustEscape(filter[i]) {
+			escape++
+		}
+	}
+	if escape == 0 {
+		return filter
+	}
+	buf := make([]byte, len(filter)+escape*2)
+	for i, j := 0, 0; i < len(filter); i++ {
+		c := filter[i]
+		if mustEscape(c) {
+			buf[j+0] = '\\'
+			buf[j+1] = hex[c>>4]
+			buf[j+2] = hex[c&0xf]
+			j += 3
+		} else {
+			buf[j] = c
+			j++
+		}
+	}
+	return string(buf)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/modify.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/modify.go
new file mode 100644
index 00000000..e4ab6cef
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/modify.go
@@ -0,0 +1,170 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// File contains Modify functionality
+//
+// https://tools.ietf.org/html/rfc4511
+//
+// ModifyRequest ::= [APPLICATION 6] SEQUENCE {
+//      object          LDAPDN,
+//      changes         SEQUENCE OF change SEQUENCE {
+//           operation       ENUMERATED {
+//                add     (0),
+//                delete  (1),
+//                replace (2),
+//                ...  },
+//           modification    PartialAttribute } }
+//
+// PartialAttribute ::= SEQUENCE {
+//      type       AttributeDescription,
+//      vals       SET OF value AttributeValue }
+//
+// AttributeDescription ::= LDAPString
+//                         -- Constrained to <attributedescription>
+//                         -- [RFC4512]
+//
+// AttributeValue ::= OCTET STRING
+//
+
+package ldap
+
+import (
+	"errors"
+	"log"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// Change operation choices
+const (
+	AddAttribute     = 0
+	DeleteAttribute  = 1
+	ReplaceAttribute = 2
+)
+
+// PartialAttribute for a ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
+type PartialAttribute struct {
+	// Type is the type of the partial attribute
+	Type string
+	// Vals are the values of the partial attribute
+	Vals []string
+}
+
+func (p *PartialAttribute) encode() *ber.Packet {
+	seq := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "PartialAttribute")
+	seq.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, p.Type, "Type"))
+	set := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSet, nil, "AttributeValue")
+	for _, value := range p.Vals {
+		set.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, value, "Vals"))
+	}
+	seq.AppendChild(set)
+	return seq
+}
+
+// ModifyRequest as defined in https://tools.ietf.org/html/rfc4511
+type ModifyRequest struct {
+	// DN is the distinguishedName of the directory entry to modify
+	DN string
+	// AddAttributes contain the attributes to add
+	AddAttributes []PartialAttribute
+	// DeleteAttributes contain the attributes to delete
+	DeleteAttributes []PartialAttribute
+	// ReplaceAttributes contain the attributes to replace
+	ReplaceAttributes []PartialAttribute
+}
+
+// Add inserts the given attribute to the list of attributes to add
+func (m *ModifyRequest) Add(attrType string, attrVals []string) {
+	m.AddAttributes = append(m.AddAttributes, PartialAttribute{Type: attrType, Vals: attrVals})
+}
+
+// Delete inserts the given attribute to the list of attributes to delete
+func (m *ModifyRequest) Delete(attrType string, attrVals []string) {
+	m.DeleteAttributes = append(m.DeleteAttributes, PartialAttribute{Type: attrType, Vals: attrVals})
+}
+
+// Replace inserts the given attribute to the list of attributes to replace
+func (m *ModifyRequest) Replace(attrType string, attrVals []string) {
+	m.ReplaceAttributes = append(m.ReplaceAttributes, PartialAttribute{Type: attrType, Vals: attrVals})
+}
+
+func (m ModifyRequest) encode() *ber.Packet {
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationModifyRequest, nil, "Modify Request")
+	request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, m.DN, "DN"))
+	changes := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Changes")
+	for _, attribute := range m.AddAttributes {
+		change := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Change")
+		change.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(AddAttribute), "Operation"))
+		change.AppendChild(attribute.encode())
+		changes.AppendChild(change)
+	}
+	for _, attribute := range m.DeleteAttributes {
+		change := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Change")
+		change.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(DeleteAttribute), "Operation"))
+		change.AppendChild(attribute.encode())
+		changes.AppendChild(change)
+	}
+	for _, attribute := range m.ReplaceAttributes {
+		change := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Change")
+		change.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(ReplaceAttribute), "Operation"))
+		change.AppendChild(attribute.encode())
+		changes.AppendChild(change)
+	}
+	request.AppendChild(changes)
+	return request
+}
+
+// NewModifyRequest creates a modify request for the given DN
+func NewModifyRequest(
+	dn string,
+) *ModifyRequest {
+	return &ModifyRequest{
+		DN: dn,
+	}
+}
+
+// Modify performs the ModifyRequest
+func (l *Conn) Modify(modifyRequest *ModifyRequest) error {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	packet.AppendChild(modifyRequest.encode())
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return err
+	}
+	defer l.finishMessage(msgCtx)
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return err
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if packet.Children[1].Tag == ApplicationModifyResponse {
+		resultCode, resultDescription := getLDAPResultCode(packet)
+		if resultCode != 0 {
+			return NewError(resultCode, errors.New(resultDescription))
+		}
+	} else {
+		log.Printf("Unexpected Response: %d", packet.Children[1].Tag)
+	}
+
+	l.Debug.Printf("%d: returning", msgCtx.id)
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/passwdmodify.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/passwdmodify.go
new file mode 100644
index 00000000..7d8246fd
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/passwdmodify.go
@@ -0,0 +1,148 @@
+// This file contains the password modify extended operation as specified in rfc 3062
+//
+// https://tools.ietf.org/html/rfc3062
+//
+
+package ldap
+
+import (
+	"errors"
+	"fmt"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+const (
+	passwordModifyOID = "1.3.6.1.4.1.4203.1.11.1"
+)
+
+// PasswordModifyRequest implements the Password Modify Extended Operation as defined in https://www.ietf.org/rfc/rfc3062.txt
+type PasswordModifyRequest struct {
+	// UserIdentity is an optional string representation of the user associated with the request.
+	// This string may or may not be an LDAPDN [RFC2253].
+	// If no UserIdentity field is present, the request acts up upon the password of the user currently associated with the LDAP session
+	UserIdentity string
+	// OldPassword, if present, contains the user's current password
+	OldPassword string
+	// NewPassword, if present, contains the desired password for this user
+	NewPassword string
+}
+
+// PasswordModifyResult holds the server response to a PasswordModifyRequest
+type PasswordModifyResult struct {
+	// GeneratedPassword holds a password generated by the server, if present
+	GeneratedPassword string
+}
+
+func (r *PasswordModifyRequest) encode() (*ber.Packet, error) {
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationExtendedRequest, nil, "Password Modify Extended Operation")
+	request.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 0, passwordModifyOID, "Extended Request Name: Password Modify OID"))
+	extendedRequestValue := ber.Encode(ber.ClassContext, ber.TypePrimitive, 1, nil, "Extended Request Value: Password Modify Request")
+	passwordModifyRequestValue := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Password Modify Request")
+	if r.UserIdentity != "" {
+		passwordModifyRequestValue.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 0, r.UserIdentity, "User Identity"))
+	}
+	if r.OldPassword != "" {
+		passwordModifyRequestValue.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 1, r.OldPassword, "Old Password"))
+	}
+	if r.NewPassword != "" {
+		passwordModifyRequestValue.AppendChild(ber.NewString(ber.ClassContext, ber.TypePrimitive, 2, r.NewPassword, "New Password"))
+	}
+
+	extendedRequestValue.AppendChild(passwordModifyRequestValue)
+	request.AppendChild(extendedRequestValue)
+
+	return request, nil
+}
+
+// NewPasswordModifyRequest creates a new PasswordModifyRequest
+//
+// According to the RFC 3602:
+// userIdentity is a string representing the user associated with the request.
+// This string may or may not be an LDAPDN (RFC 2253).
+// If userIdentity is empty then the operation will act on the user associated
+// with the session.
+//
+// oldPassword is the current user's password, it can be empty or it can be
+// needed depending on the session user access rights (usually an administrator
+// can change a user's password without knowing the current one) and the
+// password policy (see pwdSafeModify password policy's attribute)
+//
+// newPassword is the desired user's password. If empty the server can return
+// an error or generate a new password that will be available in the
+// PasswordModifyResult.GeneratedPassword
+//
+func NewPasswordModifyRequest(userIdentity string, oldPassword string, newPassword string) *PasswordModifyRequest {
+	return &PasswordModifyRequest{
+		UserIdentity: userIdentity,
+		OldPassword:  oldPassword,
+		NewPassword:  newPassword,
+	}
+}
+
+// PasswordModify performs the modification request
+func (l *Conn) PasswordModify(passwordModifyRequest *PasswordModifyRequest) (*PasswordModifyResult, error) {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+
+	encodedPasswordModifyRequest, err := passwordModifyRequest.encode()
+	if err != nil {
+		return nil, err
+	}
+	packet.AppendChild(encodedPasswordModifyRequest)
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return nil, err
+	}
+	defer l.finishMessage(msgCtx)
+
+	result := &PasswordModifyResult{}
+
+	l.Debug.Printf("%d: waiting for response", msgCtx.id)
+	packetResponse, ok := <-msgCtx.responses
+	if !ok {
+		return nil, NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+	}
+	packet, err = packetResponse.ReadPacket()
+	l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+	if err != nil {
+		return nil, err
+	}
+
+	if packet == nil {
+		return nil, NewError(ErrorNetwork, errors.New("ldap: could not retrieve message"))
+	}
+
+	if l.Debug {
+		if err := addLDAPDescriptions(packet); err != nil {
+			return nil, err
+		}
+		ber.PrintPacket(packet)
+	}
+
+	if packet.Children[1].Tag == ApplicationExtendedResponse {
+		resultCode, resultDescription := getLDAPResultCode(packet)
+		if resultCode != 0 {
+			return nil, NewError(resultCode, errors.New(resultDescription))
+		}
+	} else {
+		return nil, NewError(ErrorUnexpectedResponse, fmt.Errorf("Unexpected Response: %d", packet.Children[1].Tag))
+	}
+
+	extendedResponse := packet.Children[1]
+	for _, child := range extendedResponse.Children {
+		if child.Tag == 11 {
+			passwordModifyResponseValue := ber.DecodePacket(child.Data.Bytes())
+			if len(passwordModifyResponseValue.Children) == 1 {
+				if passwordModifyResponseValue.Children[0].Tag == 0 {
+					result.GeneratedPassword = ber.DecodeString(passwordModifyResponseValue.Children[0].Data.Bytes())
+				}
+			}
+		}
+	}
+
+	return result, nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/search.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/search.go
new file mode 100644
index 00000000..2a99894c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/go-ldap/ldap/search.go
@@ -0,0 +1,450 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// File contains Search functionality
+//
+// https://tools.ietf.org/html/rfc4511
+//
+//         SearchRequest ::= [APPLICATION 3] SEQUENCE {
+//              baseObject      LDAPDN,
+//              scope           ENUMERATED {
+//                   baseObject              (0),
+//                   singleLevel             (1),
+//                   wholeSubtree            (2),
+//                   ...  },
+//              derefAliases    ENUMERATED {
+//                   neverDerefAliases       (0),
+//                   derefInSearching        (1),
+//                   derefFindingBaseObj     (2),
+//                   derefAlways             (3) },
+//              sizeLimit       INTEGER (0 ..  maxInt),
+//              timeLimit       INTEGER (0 ..  maxInt),
+//              typesOnly       BOOLEAN,
+//              filter          Filter,
+//              attributes      AttributeSelection }
+//
+//         AttributeSelection ::= SEQUENCE OF selector LDAPString
+//                         -- The LDAPString is constrained to
+//                         -- <attributeSelector> in Section 4.5.1.8
+//
+//         Filter ::= CHOICE {
+//              and             [0] SET SIZE (1..MAX) OF filter Filter,
+//              or              [1] SET SIZE (1..MAX) OF filter Filter,
+//              not             [2] Filter,
+//              equalityMatch   [3] AttributeValueAssertion,
+//              substrings      [4] SubstringFilter,
+//              greaterOrEqual  [5] AttributeValueAssertion,
+//              lessOrEqual     [6] AttributeValueAssertion,
+//              present         [7] AttributeDescription,
+//              approxMatch     [8] AttributeValueAssertion,
+//              extensibleMatch [9] MatchingRuleAssertion,
+//              ...  }
+//
+//         SubstringFilter ::= SEQUENCE {
+//              type           AttributeDescription,
+//              substrings     SEQUENCE SIZE (1..MAX) OF substring CHOICE {
+//                   initial [0] AssertionValue,  -- can occur at most once
+//                   any     [1] AssertionValue,
+//                   final   [2] AssertionValue } -- can occur at most once
+//              }
+//
+//         MatchingRuleAssertion ::= SEQUENCE {
+//              matchingRule    [1] MatchingRuleId OPTIONAL,
+//              type            [2] AttributeDescription OPTIONAL,
+//              matchValue      [3] AssertionValue,
+//              dnAttributes    [4] BOOLEAN DEFAULT FALSE }
+//
+//
+
+package ldap
+
+import (
+	"errors"
+	"fmt"
+	"sort"
+	"strings"
+
+	"gopkg.in/asn1-ber.v1"
+)
+
+// scope choices
+const (
+	ScopeBaseObject   = 0
+	ScopeSingleLevel  = 1
+	ScopeWholeSubtree = 2
+)
+
+// ScopeMap contains human readable descriptions of scope choices
+var ScopeMap = map[int]string{
+	ScopeBaseObject:   "Base Object",
+	ScopeSingleLevel:  "Single Level",
+	ScopeWholeSubtree: "Whole Subtree",
+}
+
+// derefAliases
+const (
+	NeverDerefAliases   = 0
+	DerefInSearching    = 1
+	DerefFindingBaseObj = 2
+	DerefAlways         = 3
+)
+
+// DerefMap contains human readable descriptions of derefAliases choices
+var DerefMap = map[int]string{
+	NeverDerefAliases:   "NeverDerefAliases",
+	DerefInSearching:    "DerefInSearching",
+	DerefFindingBaseObj: "DerefFindingBaseObj",
+	DerefAlways:         "DerefAlways",
+}
+
+// NewEntry returns an Entry object with the specified distinguished name and attribute key-value pairs.
+// The map of attributes is accessed in alphabetical order of the keys in order to ensure that, for the
+// same input map of attributes, the output entry will contain the same order of attributes
+func NewEntry(dn string, attributes map[string][]string) *Entry {
+	var attributeNames []string
+	for attributeName := range attributes {
+		attributeNames = append(attributeNames, attributeName)
+	}
+	sort.Strings(attributeNames)
+
+	var encodedAttributes []*EntryAttribute
+	for _, attributeName := range attributeNames {
+		encodedAttributes = append(encodedAttributes, NewEntryAttribute(attributeName, attributes[attributeName]))
+	}
+	return &Entry{
+		DN:         dn,
+		Attributes: encodedAttributes,
+	}
+}
+
+// Entry represents a single search result entry
+type Entry struct {
+	// DN is the distinguished name of the entry
+	DN string
+	// Attributes are the returned attributes for the entry
+	Attributes []*EntryAttribute
+}
+
+// GetAttributeValues returns the values for the named attribute, or an empty list
+func (e *Entry) GetAttributeValues(attribute string) []string {
+	for _, attr := range e.Attributes {
+		if attr.Name == attribute {
+			return attr.Values
+		}
+	}
+	return []string{}
+}
+
+// GetRawAttributeValues returns the byte values for the named attribute, or an empty list
+func (e *Entry) GetRawAttributeValues(attribute string) [][]byte {
+	for _, attr := range e.Attributes {
+		if attr.Name == attribute {
+			return attr.ByteValues
+		}
+	}
+	return [][]byte{}
+}
+
+// GetAttributeValue returns the first value for the named attribute, or ""
+func (e *Entry) GetAttributeValue(attribute string) string {
+	values := e.GetAttributeValues(attribute)
+	if len(values) == 0 {
+		return ""
+	}
+	return values[0]
+}
+
+// GetRawAttributeValue returns the first value for the named attribute, or an empty slice
+func (e *Entry) GetRawAttributeValue(attribute string) []byte {
+	values := e.GetRawAttributeValues(attribute)
+	if len(values) == 0 {
+		return []byte{}
+	}
+	return values[0]
+}
+
+// Print outputs a human-readable description
+func (e *Entry) Print() {
+	fmt.Printf("DN: %s\n", e.DN)
+	for _, attr := range e.Attributes {
+		attr.Print()
+	}
+}
+
+// PrettyPrint outputs a human-readable description indenting
+func (e *Entry) PrettyPrint(indent int) {
+	fmt.Printf("%sDN: %s\n", strings.Repeat(" ", indent), e.DN)
+	for _, attr := range e.Attributes {
+		attr.PrettyPrint(indent + 2)
+	}
+}
+
+// NewEntryAttribute returns a new EntryAttribute with the desired key-value pair
+func NewEntryAttribute(name string, values []string) *EntryAttribute {
+	var bytes [][]byte
+	for _, value := range values {
+		bytes = append(bytes, []byte(value))
+	}
+	return &EntryAttribute{
+		Name:       name,
+		Values:     values,
+		ByteValues: bytes,
+	}
+}
+
+// EntryAttribute holds a single attribute
+type EntryAttribute struct {
+	// Name is the name of the attribute
+	Name string
+	// Values contain the string values of the attribute
+	Values []string
+	// ByteValues contain the raw values of the attribute
+	ByteValues [][]byte
+}
+
+// Print outputs a human-readable description
+func (e *EntryAttribute) Print() {
+	fmt.Printf("%s: %s\n", e.Name, e.Values)
+}
+
+// PrettyPrint outputs a human-readable description with indenting
+func (e *EntryAttribute) PrettyPrint(indent int) {
+	fmt.Printf("%s%s: %s\n", strings.Repeat(" ", indent), e.Name, e.Values)
+}
+
+// SearchResult holds the server's response to a search request
+type SearchResult struct {
+	// Entries are the returned entries
+	Entries []*Entry
+	// Referrals are the returned referrals
+	Referrals []string
+	// Controls are the returned controls
+	Controls []Control
+}
+
+// Print outputs a human-readable description
+func (s *SearchResult) Print() {
+	for _, entry := range s.Entries {
+		entry.Print()
+	}
+}
+
+// PrettyPrint outputs a human-readable description with indenting
+func (s *SearchResult) PrettyPrint(indent int) {
+	for _, entry := range s.Entries {
+		entry.PrettyPrint(indent)
+	}
+}
+
+// SearchRequest represents a search request to send to the server
+type SearchRequest struct {
+	BaseDN       string
+	Scope        int
+	DerefAliases int
+	SizeLimit    int
+	TimeLimit    int
+	TypesOnly    bool
+	Filter       string
+	Attributes   []string
+	Controls     []Control
+}
+
+func (s *SearchRequest) encode() (*ber.Packet, error) {
+	request := ber.Encode(ber.ClassApplication, ber.TypeConstructed, ApplicationSearchRequest, nil, "Search Request")
+	request.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, s.BaseDN, "Base DN"))
+	request.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(s.Scope), "Scope"))
+	request.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagEnumerated, uint64(s.DerefAliases), "Deref Aliases"))
+	request.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, uint64(s.SizeLimit), "Size Limit"))
+	request.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, uint64(s.TimeLimit), "Time Limit"))
+	request.AppendChild(ber.NewBoolean(ber.ClassUniversal, ber.TypePrimitive, ber.TagBoolean, s.TypesOnly, "Types Only"))
+	// compile and encode filter
+	filterPacket, err := CompileFilter(s.Filter)
+	if err != nil {
+		return nil, err
+	}
+	request.AppendChild(filterPacket)
+	// encode attributes
+	attributesPacket := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "Attributes")
+	for _, attribute := range s.Attributes {
+		attributesPacket.AppendChild(ber.NewString(ber.ClassUniversal, ber.TypePrimitive, ber.TagOctetString, attribute, "Attribute"))
+	}
+	request.AppendChild(attributesPacket)
+	return request, nil
+}
+
+// NewSearchRequest creates a new search request
+func NewSearchRequest(
+	BaseDN string,
+	Scope, DerefAliases, SizeLimit, TimeLimit int,
+	TypesOnly bool,
+	Filter string,
+	Attributes []string,
+	Controls []Control,
+) *SearchRequest {
+	return &SearchRequest{
+		BaseDN:       BaseDN,
+		Scope:        Scope,
+		DerefAliases: DerefAliases,
+		SizeLimit:    SizeLimit,
+		TimeLimit:    TimeLimit,
+		TypesOnly:    TypesOnly,
+		Filter:       Filter,
+		Attributes:   Attributes,
+		Controls:     Controls,
+	}
+}
+
+// SearchWithPaging accepts a search request and desired page size in order to execute LDAP queries to fulfill the
+// search request. All paged LDAP query responses will be buffered and the final result will be returned atomically.
+// The following four cases are possible given the arguments:
+//  - given SearchRequest missing a control of type ControlTypePaging: we will add one with the desired paging size
+//  - given SearchRequest contains a control of type ControlTypePaging that isn't actually a ControlPaging: fail without issuing any queries
+//  - given SearchRequest contains a control of type ControlTypePaging with pagingSize equal to the size requested: no change to the search request
+//  - given SearchRequest contains a control of type ControlTypePaging with pagingSize not equal to the size requested: fail without issuing any queries
+// A requested pagingSize of 0 is interpreted as no limit by LDAP servers.
+func (l *Conn) SearchWithPaging(searchRequest *SearchRequest, pagingSize uint32) (*SearchResult, error) {
+	var pagingControl *ControlPaging
+
+	control := FindControl(searchRequest.Controls, ControlTypePaging)
+	if control == nil {
+		pagingControl = NewControlPaging(pagingSize)
+		searchRequest.Controls = append(searchRequest.Controls, pagingControl)
+	} else {
+		castControl, ok := control.(*ControlPaging)
+		if !ok {
+			return nil, fmt.Errorf("Expected paging control to be of type *ControlPaging, got %v", control)
+		}
+		if castControl.PagingSize != pagingSize {
+			return nil, fmt.Errorf("Paging size given in search request (%d) conflicts with size given in search call (%d)", castControl.PagingSize, pagingSize)
+		}
+		pagingControl = castControl
+	}
+
+	searchResult := new(SearchResult)
+	for {
+		result, err := l.Search(searchRequest)
+		l.Debug.Printf("Looking for Paging Control...")
+		if err != nil {
+			return searchResult, err
+		}
+		if result == nil {
+			return searchResult, NewError(ErrorNetwork, errors.New("ldap: packet not received"))
+		}
+
+		for _, entry := range result.Entries {
+			searchResult.Entries = append(searchResult.Entries, entry)
+		}
+		for _, referral := range result.Referrals {
+			searchResult.Referrals = append(searchResult.Referrals, referral)
+		}
+		for _, control := range result.Controls {
+			searchResult.Controls = append(searchResult.Controls, control)
+		}
+
+		l.Debug.Printf("Looking for Paging Control...")
+		pagingResult := FindControl(result.Controls, ControlTypePaging)
+		if pagingResult == nil {
+			pagingControl = nil
+			l.Debug.Printf("Could not find paging control.  Breaking...")
+			break
+		}
+
+		cookie := pagingResult.(*ControlPaging).Cookie
+		if len(cookie) == 0 {
+			pagingControl = nil
+			l.Debug.Printf("Could not find cookie.  Breaking...")
+			break
+		}
+		pagingControl.SetCookie(cookie)
+	}
+
+	if pagingControl != nil {
+		l.Debug.Printf("Abandoning Paging...")
+		pagingControl.PagingSize = 0
+		l.Search(searchRequest)
+	}
+
+	return searchResult, nil
+}
+
+// Search performs the given search request
+func (l *Conn) Search(searchRequest *SearchRequest) (*SearchResult, error) {
+	packet := ber.Encode(ber.ClassUniversal, ber.TypeConstructed, ber.TagSequence, nil, "LDAP Request")
+	packet.AppendChild(ber.NewInteger(ber.ClassUniversal, ber.TypePrimitive, ber.TagInteger, l.nextMessageID(), "MessageID"))
+	// encode search request
+	encodedSearchRequest, err := searchRequest.encode()
+	if err != nil {
+		return nil, err
+	}
+	packet.AppendChild(encodedSearchRequest)
+	// encode search controls
+	if searchRequest.Controls != nil {
+		packet.AppendChild(encodeControls(searchRequest.Controls))
+	}
+
+	l.Debug.PrintPacket(packet)
+
+	msgCtx, err := l.sendMessage(packet)
+	if err != nil {
+		return nil, err
+	}
+	defer l.finishMessage(msgCtx)
+
+	result := &SearchResult{
+		Entries:   make([]*Entry, 0),
+		Referrals: make([]string, 0),
+		Controls:  make([]Control, 0)}
+
+	foundSearchResultDone := false
+	for !foundSearchResultDone {
+		l.Debug.Printf("%d: waiting for response", msgCtx.id)
+		packetResponse, ok := <-msgCtx.responses
+		if !ok {
+			return nil, NewError(ErrorNetwork, errors.New("ldap: response channel closed"))
+		}
+		packet, err = packetResponse.ReadPacket()
+		l.Debug.Printf("%d: got response %p", msgCtx.id, packet)
+		if err != nil {
+			return nil, err
+		}
+
+		if l.Debug {
+			if err := addLDAPDescriptions(packet); err != nil {
+				return nil, err
+			}
+			ber.PrintPacket(packet)
+		}
+
+		switch packet.Children[1].Tag {
+		case 4:
+			entry := new(Entry)
+			entry.DN = packet.Children[1].Children[0].Value.(string)
+			for _, child := range packet.Children[1].Children[1].Children {
+				attr := new(EntryAttribute)
+				attr.Name = child.Children[0].Value.(string)
+				for _, value := range child.Children[1].Children {
+					attr.Values = append(attr.Values, value.Value.(string))
+					attr.ByteValues = append(attr.ByteValues, value.ByteValue)
+				}
+				entry.Attributes = append(entry.Attributes, attr)
+			}
+			result.Entries = append(result.Entries, entry)
+		case 5:
+			resultCode, resultDescription := getLDAPResultCode(packet)
+			if resultCode != 0 {
+				return result, NewError(resultCode, errors.New(resultDescription))
+			}
+			if len(packet.Children) == 3 {
+				for _, child := range packet.Children[2].Children {
+					result.Controls = append(result.Controls, DecodeControl(child))
+				}
+			}
+			foundSearchResultDone = true
+		case 19:
+			result.Referrals = append(result.Referrals, packet.Children[1].Children[0].Value.(string))
+		}
+	}
+	l.Debug.Printf("%d: returning", msgCtx.id)
+	return result, nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
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+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
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+
+  Nothing in this License shall be construed as excluding or limiting
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+
+  12. No Surrender of Others' Freedom.
+
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+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
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+
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+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
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+permissions.  However, no additional obligations are imposed on any
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+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
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+free software which everyone can redistribute and change under these terms.
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+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
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+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
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+
+  You should also get your employer (if you work as a programmer) or school,
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+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/dce.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/dce.go
new file mode 100644
index 00000000..50a0f2d0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/dce.go
@@ -0,0 +1,84 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"fmt"
+	"os"
+)
+
+// A Domain represents a Version 2 domain
+type Domain byte
+
+// Domain constants for DCE Security (Version 2) UUIDs.
+const (
+	Person = Domain(0)
+	Group  = Domain(1)
+	Org    = Domain(2)
+)
+
+// NewDCESecurity returns a DCE Security (Version 2) UUID.
+//
+// The domain should be one of Person, Group or Org.
+// On a POSIX system the id should be the users UID for the Person
+// domain and the users GID for the Group.  The meaning of id for
+// the domain Org or on non-POSIX systems is site defined.
+//
+// For a given domain/id pair the same token may be returned for up to
+// 7 minutes and 10 seconds.
+func NewDCESecurity(domain Domain, id uint32) UUID {
+	uuid := NewUUID()
+	if uuid != nil {
+		uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
+		uuid[9] = byte(domain)
+		binary.BigEndian.PutUint32(uuid[0:], id)
+	}
+	return uuid
+}
+
+// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
+// domain with the id returned by os.Getuid.
+//
+//  NewDCEPerson(Person, uint32(os.Getuid()))
+func NewDCEPerson() UUID {
+	return NewDCESecurity(Person, uint32(os.Getuid()))
+}
+
+// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
+// domain with the id returned by os.Getgid.
+//
+//  NewDCEGroup(Group, uint32(os.Getgid()))
+func NewDCEGroup() UUID {
+	return NewDCESecurity(Group, uint32(os.Getgid()))
+}
+
+// Domain returns the domain for a Version 2 UUID or false.
+func (uuid UUID) Domain() (Domain, bool) {
+	if v, _ := uuid.Version(); v != 2 {
+		return 0, false
+	}
+	return Domain(uuid[9]), true
+}
+
+// Id returns the id for a Version 2 UUID or false.
+func (uuid UUID) Id() (uint32, bool) {
+	if v, _ := uuid.Version(); v != 2 {
+		return 0, false
+	}
+	return binary.BigEndian.Uint32(uuid[0:4]), true
+}
+
+func (d Domain) String() string {
+	switch d {
+	case Person:
+		return "Person"
+	case Group:
+		return "Group"
+	case Org:
+		return "Org"
+	}
+	return fmt.Sprintf("Domain%d", int(d))
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/doc.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/doc.go
new file mode 100644
index 00000000..d8bd013e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/doc.go
@@ -0,0 +1,8 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The uuid package generates and inspects UUIDs.
+//
+// UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security Services.
+package uuid
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/hash.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/hash.go
new file mode 100644
index 00000000..a0420c1e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/hash.go
@@ -0,0 +1,53 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"crypto/md5"
+	"crypto/sha1"
+	"hash"
+)
+
+// Well known Name Space IDs and UUIDs
+var (
+	NameSpace_DNS  = Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
+	NameSpace_URL  = Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8")
+	NameSpace_OID  = Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8")
+	NameSpace_X500 = Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8")
+	NIL            = Parse("00000000-0000-0000-0000-000000000000")
+)
+
+// NewHash returns a new UUID derived from the hash of space concatenated with
+// data generated by h.  The hash should be at least 16 byte in length.  The
+// first 16 bytes of the hash are used to form the UUID.  The version of the
+// UUID will be the lower 4 bits of version.  NewHash is used to implement
+// NewMD5 and NewSHA1.
+func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
+	h.Reset()
+	h.Write(space)
+	h.Write([]byte(data))
+	s := h.Sum(nil)
+	uuid := make([]byte, 16)
+	copy(uuid, s)
+	uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4)
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant
+	return uuid
+}
+
+// NewMD5 returns a new MD5 (Version 3) UUID based on the
+// supplied name space and data.
+//
+//  NewHash(md5.New(), space, data, 3)
+func NewMD5(space UUID, data []byte) UUID {
+	return NewHash(md5.New(), space, data, 3)
+}
+
+// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
+// supplied name space and data.
+//
+//  NewHash(sha1.New(), space, data, 5)
+func NewSHA1(space UUID, data []byte) UUID {
+	return NewHash(sha1.New(), space, data, 5)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/marshal.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/marshal.go
new file mode 100644
index 00000000..6621dd54
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/marshal.go
@@ -0,0 +1,83 @@
+// Copyright 2016 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"errors"
+	"fmt"
+)
+
+// MarshalText implements encoding.TextMarshaler.
+func (u UUID) MarshalText() ([]byte, error) {
+	if len(u) != 16 {
+		return nil, nil
+	}
+	var js [36]byte
+	encodeHex(js[:], u)
+	return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (u *UUID) UnmarshalText(data []byte) error {
+	if len(data) == 0 {
+		return nil
+	}
+	id := Parse(string(data))
+	if id == nil {
+		return errors.New("invalid UUID")
+	}
+	*u = id
+	return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (u UUID) MarshalBinary() ([]byte, error) {
+	return u[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (u *UUID) UnmarshalBinary(data []byte) error {
+	if len(data) == 0 {
+		return nil
+	}
+	if len(data) != 16 {
+		return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+	}
+	var id [16]byte
+	copy(id[:], data)
+	*u = id[:]
+	return nil
+}
+
+// MarshalText implements encoding.TextMarshaler.
+func (u Array) MarshalText() ([]byte, error) {
+	var js [36]byte
+	encodeHex(js[:], u[:])
+	return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (u *Array) UnmarshalText(data []byte) error {
+	id := Parse(string(data))
+	if id == nil {
+		return errors.New("invalid UUID")
+	}
+	*u = id.Array()
+	return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (u Array) MarshalBinary() ([]byte, error) {
+	return u[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (u *Array) UnmarshalBinary(data []byte) error {
+	if len(data) != 16 {
+		return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+	}
+	copy(u[:], data)
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/node.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/node.go
new file mode 100644
index 00000000..42d60da8
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/node.go
@@ -0,0 +1,117 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"net"
+	"sync"
+)
+
+var (
+	nodeMu     sync.Mutex
+	interfaces []net.Interface // cached list of interfaces
+	ifname     string          // name of interface being used
+	nodeID     []byte          // hardware for version 1 UUIDs
+)
+
+// NodeInterface returns the name of the interface from which the NodeID was
+// derived.  The interface "user" is returned if the NodeID was set by
+// SetNodeID.
+func NodeInterface() string {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return ifname
+}
+
+// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
+// If name is "" then the first usable interface found will be used or a random
+// Node ID will be generated.  If a named interface cannot be found then false
+// is returned.
+//
+// SetNodeInterface never fails when name is "".
+func SetNodeInterface(name string) bool {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	return setNodeInterface(name)
+}
+
+func setNodeInterface(name string) bool {
+	if interfaces == nil {
+		var err error
+		interfaces, err = net.Interfaces()
+		if err != nil && name != "" {
+			return false
+		}
+	}
+
+	for _, ifs := range interfaces {
+		if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) {
+			if setNodeID(ifs.HardwareAddr) {
+				ifname = ifs.Name
+				return true
+			}
+		}
+	}
+
+	// We found no interfaces with a valid hardware address.  If name
+	// does not specify a specific interface generate a random Node ID
+	// (section 4.1.6)
+	if name == "" {
+		if nodeID == nil {
+			nodeID = make([]byte, 6)
+		}
+		randomBits(nodeID)
+		return true
+	}
+	return false
+}
+
+// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
+// if not already set.
+func NodeID() []byte {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	if nodeID == nil {
+		setNodeInterface("")
+	}
+	nid := make([]byte, 6)
+	copy(nid, nodeID)
+	return nid
+}
+
+// SetNodeID sets the Node ID to be used for Version 1 UUIDs.  The first 6 bytes
+// of id are used.  If id is less than 6 bytes then false is returned and the
+// Node ID is not set.
+func SetNodeID(id []byte) bool {
+	defer nodeMu.Unlock()
+	nodeMu.Lock()
+	if setNodeID(id) {
+		ifname = "user"
+		return true
+	}
+	return false
+}
+
+func setNodeID(id []byte) bool {
+	if len(id) < 6 {
+		return false
+	}
+	if nodeID == nil {
+		nodeID = make([]byte, 6)
+	}
+	copy(nodeID, id)
+	return true
+}
+
+// NodeID returns the 6 byte node id encoded in uuid.  It returns nil if uuid is
+// not valid.  The NodeID is only well defined for version 1 and 2 UUIDs.
+func (uuid UUID) NodeID() []byte {
+	if len(uuid) != 16 {
+		return nil
+	}
+	node := make([]byte, 6)
+	copy(node, uuid[10:])
+	return node
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/sql.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/sql.go
new file mode 100644
index 00000000..d015bfd1
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/sql.go
@@ -0,0 +1,66 @@
+// Copyright 2015 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"database/sql/driver"
+	"errors"
+	"fmt"
+)
+
+// Scan implements sql.Scanner so UUIDs can be read from databases transparently
+// Currently, database types that map to string and []byte are supported. Please
+// consult database-specific driver documentation for matching types.
+func (uuid *UUID) Scan(src interface{}) error {
+	switch src.(type) {
+	case string:
+		// if an empty UUID comes from a table, we return a null UUID
+		if src.(string) == "" {
+			return nil
+		}
+
+		// see uuid.Parse for required string format
+		parsed := Parse(src.(string))
+
+		if parsed == nil {
+			return errors.New("Scan: invalid UUID format")
+		}
+
+		*uuid = parsed
+	case []byte:
+		b := src.([]byte)
+
+		// if an empty UUID comes from a table, we return a null UUID
+		if len(b) == 0 {
+			return nil
+		}
+
+		// assumes a simple slice of bytes if 16 bytes
+		// otherwise attempts to parse
+		if len(b) == 16 {
+			*uuid = UUID(b)
+		} else {
+			u := Parse(string(b))
+
+			if u == nil {
+				return errors.New("Scan: invalid UUID format")
+			}
+
+			*uuid = u
+		}
+
+	default:
+		return fmt.Errorf("Scan: unable to scan type %T into UUID", src)
+	}
+
+	return nil
+}
+
+// Value implements sql.Valuer so that UUIDs can be written to databases
+// transparently. Currently, UUIDs map to strings. Please consult
+// database-specific driver documentation for matching types.
+func (uuid UUID) Value() (driver.Value, error) {
+	return uuid.String(), nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/time.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/time.go
new file mode 100644
index 00000000..eedf2421
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/time.go
@@ -0,0 +1,132 @@
+// Copyright 2014 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+	"sync"
+	"time"
+)
+
+// A Time represents a time as the number of 100's of nanoseconds since 15 Oct
+// 1582.
+type Time int64
+
+const (
+	lillian    = 2299160          // Julian day of 15 Oct 1582
+	unix       = 2440587          // Julian day of 1 Jan 1970
+	epoch      = unix - lillian   // Days between epochs
+	g1582      = epoch * 86400    // seconds between epochs
+	g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs
+)
+
+var (
+	timeMu    sync.Mutex
+	lasttime  uint64 // last time we returned
+	clock_seq uint16 // clock sequence for this run
+
+	timeNow = time.Now // for testing
+)
+
+// UnixTime converts t the number of seconds and nanoseconds using the Unix
+// epoch of 1 Jan 1970.
+func (t Time) UnixTime() (sec, nsec int64) {
+	sec = int64(t - g1582ns100)
+	nsec = (sec % 10000000) * 100
+	sec /= 10000000
+	return sec, nsec
+}
+
+// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and
+// clock sequence as well as adjusting the clock sequence as needed.  An error
+// is returned if the current time cannot be determined.
+func GetTime() (Time, uint16, error) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return getTime()
+}
+
+func getTime() (Time, uint16, error) {
+	t := timeNow()
+
+	// If we don't have a clock sequence already, set one.
+	if clock_seq == 0 {
+		setClockSequence(-1)
+	}
+	now := uint64(t.UnixNano()/100) + g1582ns100
+
+	// If time has gone backwards with this clock sequence then we
+	// increment the clock sequence
+	if now <= lasttime {
+		clock_seq = ((clock_seq + 1) & 0x3fff) | 0x8000
+	}
+	lasttime = now
+	return Time(now), clock_seq, nil
+}
+
+// ClockSequence returns the current clock sequence, generating one if not
+// already set.  The clock sequence is only used for Version 1 UUIDs.
+//
+// The uuid package does not use global static storage for the clock sequence or
+// the last time a UUID was generated.  Unless SetClockSequence a new random
+// clock sequence is generated the first time a clock sequence is requested by
+// ClockSequence, GetTime, or NewUUID.  (section 4.2.1.1) sequence is generated
+// for
+func ClockSequence() int {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	return clockSequence()
+}
+
+func clockSequence() int {
+	if clock_seq == 0 {
+		setClockSequence(-1)
+	}
+	return int(clock_seq & 0x3fff)
+}
+
+// SetClockSeq sets the clock sequence to the lower 14 bits of seq.  Setting to
+// -1 causes a new sequence to be generated.
+func SetClockSequence(seq int) {
+	defer timeMu.Unlock()
+	timeMu.Lock()
+	setClockSequence(seq)
+}
+
+func setClockSequence(seq int) {
+	if seq == -1 {
+		var b [2]byte
+		randomBits(b[:]) // clock sequence
+		seq = int(b[0])<<8 | int(b[1])
+	}
+	old_seq := clock_seq
+	clock_seq = uint16(seq&0x3fff) | 0x8000 // Set our variant
+	if old_seq != clock_seq {
+		lasttime = 0
+	}
+}
+
+// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in
+// uuid.  It returns false if uuid is not valid.  The time is only well defined
+// for version 1 and 2 UUIDs.
+func (uuid UUID) Time() (Time, bool) {
+	if len(uuid) != 16 {
+		return 0, false
+	}
+	time := int64(binary.BigEndian.Uint32(uuid[0:4]))
+	time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32
+	time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48
+	return Time(time), true
+}
+
+// ClockSequence returns the clock sequence encoded in uuid.  It returns false
+// if uuid is not valid.  The clock sequence is only well defined for version 1
+// and 2 UUIDs.
+func (uuid UUID) ClockSequence() (int, bool) {
+	if len(uuid) != 16 {
+		return 0, false
+	}
+	return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff, true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/util.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/util.go
new file mode 100644
index 00000000..fc8e052c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/util.go
@@ -0,0 +1,43 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"io"
+)
+
+// randomBits completely fills slice b with random data.
+func randomBits(b []byte) {
+	if _, err := io.ReadFull(rander, b); err != nil {
+		panic(err.Error()) // rand should never fail
+	}
+}
+
+// xvalues returns the value of a byte as a hexadecimal digit or 255.
+var xvalues = [256]byte{
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+}
+
+// xtob converts the the first two hex bytes of x into a byte.
+func xtob(x string) (byte, bool) {
+	b1 := xvalues[x[0]]
+	b2 := xvalues[x[1]]
+	return (b1 << 4) | b2, b1 != 255 && b2 != 255
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/uuid.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/uuid.go
new file mode 100644
index 00000000..7c643cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/uuid.go
@@ -0,0 +1,201 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"strings"
+)
+
+// Array is a pass-by-value UUID that can be used as an effecient key in a map.
+type Array [16]byte
+
+// UUID converts uuid into a slice.
+func (uuid Array) UUID() UUID {
+	return uuid[:]
+}
+
+// String returns the string representation of uuid,
+// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.
+func (uuid Array) String() string {
+	return uuid.UUID().String()
+}
+
+// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC
+// 4122.
+type UUID []byte
+
+// A Version represents a UUIDs version.
+type Version byte
+
+// A Variant represents a UUIDs variant.
+type Variant byte
+
+// Constants returned by Variant.
+const (
+	Invalid   = Variant(iota) // Invalid UUID
+	RFC4122                   // The variant specified in RFC4122
+	Reserved                  // Reserved, NCS backward compatibility.
+	Microsoft                 // Reserved, Microsoft Corporation backward compatibility.
+	Future                    // Reserved for future definition.
+)
+
+var rander = rand.Reader // random function
+
+// New returns a new random (version 4) UUID as a string.  It is a convenience
+// function for NewRandom().String().
+func New() string {
+	return NewRandom().String()
+}
+
+// Parse decodes s into a UUID or returns nil.  Both the UUID form of
+// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded.
+func Parse(s string) UUID {
+	if len(s) == 36+9 {
+		if strings.ToLower(s[:9]) != "urn:uuid:" {
+			return nil
+		}
+		s = s[9:]
+	} else if len(s) != 36 {
+		return nil
+	}
+	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
+		return nil
+	}
+	var uuid [16]byte
+	for i, x := range [16]int{
+		0, 2, 4, 6,
+		9, 11,
+		14, 16,
+		19, 21,
+		24, 26, 28, 30, 32, 34} {
+		if v, ok := xtob(s[x:]); !ok {
+			return nil
+		} else {
+			uuid[i] = v
+		}
+	}
+	return uuid[:]
+}
+
+// Equal returns true if uuid1 and uuid2 are equal.
+func Equal(uuid1, uuid2 UUID) bool {
+	return bytes.Equal(uuid1, uuid2)
+}
+
+// Array returns an array representation of uuid that can be used as a map key.
+// Array panics if uuid is not valid.
+func (uuid UUID) Array() Array {
+	if len(uuid) != 16 {
+		panic("invalid uuid")
+	}
+	var a Array
+	copy(a[:], uuid)
+	return a
+}
+
+// String returns the string form of uuid, xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+// , or "" if uuid is invalid.
+func (uuid UUID) String() string {
+	if len(uuid) != 16 {
+		return ""
+	}
+	var buf [36]byte
+	encodeHex(buf[:], uuid)
+	return string(buf[:])
+}
+
+// URN returns the RFC 2141 URN form of uuid,
+// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx,  or "" if uuid is invalid.
+func (uuid UUID) URN() string {
+	if len(uuid) != 16 {
+		return ""
+	}
+	var buf [36 + 9]byte
+	copy(buf[:], "urn:uuid:")
+	encodeHex(buf[9:], uuid)
+	return string(buf[:])
+}
+
+func encodeHex(dst []byte, uuid UUID) {
+	hex.Encode(dst[:], uuid[:4])
+	dst[8] = '-'
+	hex.Encode(dst[9:13], uuid[4:6])
+	dst[13] = '-'
+	hex.Encode(dst[14:18], uuid[6:8])
+	dst[18] = '-'
+	hex.Encode(dst[19:23], uuid[8:10])
+	dst[23] = '-'
+	hex.Encode(dst[24:], uuid[10:])
+}
+
+// Variant returns the variant encoded in uuid.  It returns Invalid if
+// uuid is invalid.
+func (uuid UUID) Variant() Variant {
+	if len(uuid) != 16 {
+		return Invalid
+	}
+	switch {
+	case (uuid[8] & 0xc0) == 0x80:
+		return RFC4122
+	case (uuid[8] & 0xe0) == 0xc0:
+		return Microsoft
+	case (uuid[8] & 0xe0) == 0xe0:
+		return Future
+	default:
+		return Reserved
+	}
+}
+
+// Version returns the version of uuid.  It returns false if uuid is not
+// valid.
+func (uuid UUID) Version() (Version, bool) {
+	if len(uuid) != 16 {
+		return 0, false
+	}
+	return Version(uuid[6] >> 4), true
+}
+
+func (v Version) String() string {
+	if v > 15 {
+		return fmt.Sprintf("BAD_VERSION_%d", v)
+	}
+	return fmt.Sprintf("VERSION_%d", v)
+}
+
+func (v Variant) String() string {
+	switch v {
+	case RFC4122:
+		return "RFC4122"
+	case Reserved:
+		return "Reserved"
+	case Microsoft:
+		return "Microsoft"
+	case Future:
+		return "Future"
+	case Invalid:
+		return "Invalid"
+	}
+	return fmt.Sprintf("BadVariant%d", int(v))
+}
+
+// SetRand sets the random number generator to r, which implements io.Reader.
+// If r.Read returns an error when the package requests random data then
+// a panic will be issued.
+//
+// Calling SetRand with nil sets the random number generator to the default
+// generator.
+func SetRand(r io.Reader) {
+	if r == nil {
+		rander = rand.Reader
+		return
+	}
+	rander = r
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version1.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version1.go
new file mode 100644
index 00000000..0127eacf
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version1.go
@@ -0,0 +1,41 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+	"encoding/binary"
+)
+
+// NewUUID returns a Version 1 UUID based on the current NodeID and clock
+// sequence, and the current time.  If the NodeID has not been set by SetNodeID
+// or SetNodeInterface then it will be set automatically.  If the NodeID cannot
+// be set NewUUID returns nil.  If clock sequence has not been set by
+// SetClockSequence then it will be set automatically.  If GetTime fails to
+// return the current NewUUID returns nil.
+func NewUUID() UUID {
+	if nodeID == nil {
+		SetNodeInterface("")
+	}
+
+	now, seq, err := GetTime()
+	if err != nil {
+		return nil
+	}
+
+	uuid := make([]byte, 16)
+
+	time_low := uint32(now & 0xffffffff)
+	time_mid := uint16((now >> 32) & 0xffff)
+	time_hi := uint16((now >> 48) & 0x0fff)
+	time_hi |= 0x1000 // Version 1
+
+	binary.BigEndian.PutUint32(uuid[0:], time_low)
+	binary.BigEndian.PutUint16(uuid[4:], time_mid)
+	binary.BigEndian.PutUint16(uuid[6:], time_hi)
+	binary.BigEndian.PutUint16(uuid[8:], seq)
+	copy(uuid[10:], nodeID)
+
+	return uuid
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version4.go b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version4.go
new file mode 100644
index 00000000..b3d4a368
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/github.com/pborman/uuid/version4.go
@@ -0,0 +1,25 @@
+// Copyright 2011 Google Inc.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+// Random returns a Random (Version 4) UUID or panics.
+//
+// The strength of the UUIDs is based on the strength of the crypto/rand
+// package.
+//
+// A note about uniqueness derived from from the UUID Wikipedia entry:
+//
+//  Randomly generated UUIDs have 122 random bits.  One's annual risk of being
+//  hit by a meteorite is estimated to be one chance in 17 billion, that
+//  means the probability is about 0.00000000006 (6 × 10−11),
+//  equivalent to the odds of creating a few tens of trillions of UUIDs in a
+//  year and having one duplicate.
+func NewRandom() UUID {
+	uuid := make([]byte, 16)
+	randomBits([]byte(uuid))
+	uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
+	uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
+	return uuid
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
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+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
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+
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+
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+  Additional terms, permissive or non-permissive, may be stated in the
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+  Termination of your rights under this section does not terminate the
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+  9. Acceptance Not Required for Having Copies.
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+  You are not required to accept this License in order to receive or
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+  10. Automatic Licensing of Downstream Recipients.
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+
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+party means to make such an agreement or commitment not to enforce a
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+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
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+
+  A patent license is "discriminatory" if it does not include within
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+conditioned on the non-exercise of one or more of the rights that are
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+
+  Nothing in this License shall be construed as excluding or limiting
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+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
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+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
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+
+  14. Revised Versions of this License.
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+
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+  15. Disclaimer of Warranty.
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
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+
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+
+Also add information on how to contact you by electronic and paper mail.
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+
+  You should also get your employer (if you work as a programmer) or school,
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+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/base64.go b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/base64.go
new file mode 100644
index 00000000..fc311609
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/base64.go
@@ -0,0 +1,35 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bcrypt
+
+import "encoding/base64"
+
+const alphabet = "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+
+var bcEncoding = base64.NewEncoding(alphabet)
+
+func base64Encode(src []byte) []byte {
+	n := bcEncoding.EncodedLen(len(src))
+	dst := make([]byte, n)
+	bcEncoding.Encode(dst, src)
+	for dst[n-1] == '=' {
+		n--
+	}
+	return dst[:n]
+}
+
+func base64Decode(src []byte) ([]byte, error) {
+	numOfEquals := 4 - (len(src) % 4)
+	for i := 0; i < numOfEquals; i++ {
+		src = append(src, '=')
+	}
+
+	dst := make([]byte, bcEncoding.DecodedLen(len(src)))
+	n, err := bcEncoding.Decode(dst, src)
+	if err != nil {
+		return nil, err
+	}
+	return dst[:n], nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/bcrypt.go b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
new file mode 100644
index 00000000..aeb73f81
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/bcrypt/bcrypt.go
@@ -0,0 +1,295 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing
+// algorithm. See http://www.usenix.org/event/usenix99/provos/provos.pdf
+package bcrypt // import "golang.org/x/crypto/bcrypt"
+
+// The code is a port of Provos and Mazières's C implementation.
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+
+	"golang.org/x/crypto/blowfish"
+)
+
+const (
+	MinCost     int = 4  // the minimum allowable cost as passed in to GenerateFromPassword
+	MaxCost     int = 31 // the maximum allowable cost as passed in to GenerateFromPassword
+	DefaultCost int = 10 // the cost that will actually be set if a cost below MinCost is passed into GenerateFromPassword
+)
+
+// The error returned from CompareHashAndPassword when a password and hash do
+// not match.
+var ErrMismatchedHashAndPassword = errors.New("crypto/bcrypt: hashedPassword is not the hash of the given password")
+
+// The error returned from CompareHashAndPassword when a hash is too short to
+// be a bcrypt hash.
+var ErrHashTooShort = errors.New("crypto/bcrypt: hashedSecret too short to be a bcrypted password")
+
+// The error returned from CompareHashAndPassword when a hash was created with
+// a bcrypt algorithm newer than this implementation.
+type HashVersionTooNewError byte
+
+func (hv HashVersionTooNewError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: bcrypt algorithm version '%c' requested is newer than current version '%c'", byte(hv), majorVersion)
+}
+
+// The error returned from CompareHashAndPassword when a hash starts with something other than '$'
+type InvalidHashPrefixError byte
+
+func (ih InvalidHashPrefixError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: bcrypt hashes must start with '$', but hashedSecret started with '%c'", byte(ih))
+}
+
+type InvalidCostError int
+
+func (ic InvalidCostError) Error() string {
+	return fmt.Sprintf("crypto/bcrypt: cost %d is outside allowed range (%d,%d)", int(ic), int(MinCost), int(MaxCost))
+}
+
+const (
+	majorVersion       = '2'
+	minorVersion       = 'a'
+	maxSaltSize        = 16
+	maxCryptedHashSize = 23
+	encodedSaltSize    = 22
+	encodedHashSize    = 31
+	minHashSize        = 59
+)
+
+// magicCipherData is an IV for the 64 Blowfish encryption calls in
+// bcrypt(). It's the string "OrpheanBeholderScryDoubt" in big-endian bytes.
+var magicCipherData = []byte{
+	0x4f, 0x72, 0x70, 0x68,
+	0x65, 0x61, 0x6e, 0x42,
+	0x65, 0x68, 0x6f, 0x6c,
+	0x64, 0x65, 0x72, 0x53,
+	0x63, 0x72, 0x79, 0x44,
+	0x6f, 0x75, 0x62, 0x74,
+}
+
+type hashed struct {
+	hash  []byte
+	salt  []byte
+	cost  int // allowed range is MinCost to MaxCost
+	major byte
+	minor byte
+}
+
+// GenerateFromPassword returns the bcrypt hash of the password at the given
+// cost. If the cost given is less than MinCost, the cost will be set to
+// DefaultCost, instead. Use CompareHashAndPassword, as defined in this package,
+// to compare the returned hashed password with its cleartext version.
+func GenerateFromPassword(password []byte, cost int) ([]byte, error) {
+	p, err := newFromPassword(password, cost)
+	if err != nil {
+		return nil, err
+	}
+	return p.Hash(), nil
+}
+
+// CompareHashAndPassword compares a bcrypt hashed password with its possible
+// plaintext equivalent. Returns nil on success, or an error on failure.
+func CompareHashAndPassword(hashedPassword, password []byte) error {
+	p, err := newFromHash(hashedPassword)
+	if err != nil {
+		return err
+	}
+
+	otherHash, err := bcrypt(password, p.cost, p.salt)
+	if err != nil {
+		return err
+	}
+
+	otherP := &hashed{otherHash, p.salt, p.cost, p.major, p.minor}
+	if subtle.ConstantTimeCompare(p.Hash(), otherP.Hash()) == 1 {
+		return nil
+	}
+
+	return ErrMismatchedHashAndPassword
+}
+
+// Cost returns the hashing cost used to create the given hashed
+// password. When, in the future, the hashing cost of a password system needs
+// to be increased in order to adjust for greater computational power, this
+// function allows one to establish which passwords need to be updated.
+func Cost(hashedPassword []byte) (int, error) {
+	p, err := newFromHash(hashedPassword)
+	if err != nil {
+		return 0, err
+	}
+	return p.cost, nil
+}
+
+func newFromPassword(password []byte, cost int) (*hashed, error) {
+	if cost < MinCost {
+		cost = DefaultCost
+	}
+	p := new(hashed)
+	p.major = majorVersion
+	p.minor = minorVersion
+
+	err := checkCost(cost)
+	if err != nil {
+		return nil, err
+	}
+	p.cost = cost
+
+	unencodedSalt := make([]byte, maxSaltSize)
+	_, err = io.ReadFull(rand.Reader, unencodedSalt)
+	if err != nil {
+		return nil, err
+	}
+
+	p.salt = base64Encode(unencodedSalt)
+	hash, err := bcrypt(password, p.cost, p.salt)
+	if err != nil {
+		return nil, err
+	}
+	p.hash = hash
+	return p, err
+}
+
+func newFromHash(hashedSecret []byte) (*hashed, error) {
+	if len(hashedSecret) < minHashSize {
+		return nil, ErrHashTooShort
+	}
+	p := new(hashed)
+	n, err := p.decodeVersion(hashedSecret)
+	if err != nil {
+		return nil, err
+	}
+	hashedSecret = hashedSecret[n:]
+	n, err = p.decodeCost(hashedSecret)
+	if err != nil {
+		return nil, err
+	}
+	hashedSecret = hashedSecret[n:]
+
+	// The "+2" is here because we'll have to append at most 2 '=' to the salt
+	// when base64 decoding it in expensiveBlowfishSetup().
+	p.salt = make([]byte, encodedSaltSize, encodedSaltSize+2)
+	copy(p.salt, hashedSecret[:encodedSaltSize])
+
+	hashedSecret = hashedSecret[encodedSaltSize:]
+	p.hash = make([]byte, len(hashedSecret))
+	copy(p.hash, hashedSecret)
+
+	return p, nil
+}
+
+func bcrypt(password []byte, cost int, salt []byte) ([]byte, error) {
+	cipherData := make([]byte, len(magicCipherData))
+	copy(cipherData, magicCipherData)
+
+	c, err := expensiveBlowfishSetup(password, uint32(cost), salt)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := 0; i < 24; i += 8 {
+		for j := 0; j < 64; j++ {
+			c.Encrypt(cipherData[i:i+8], cipherData[i:i+8])
+		}
+	}
+
+	// Bug compatibility with C bcrypt implementations. We only encode 23 of
+	// the 24 bytes encrypted.
+	hsh := base64Encode(cipherData[:maxCryptedHashSize])
+	return hsh, nil
+}
+
+func expensiveBlowfishSetup(key []byte, cost uint32, salt []byte) (*blowfish.Cipher, error) {
+	csalt, err := base64Decode(salt)
+	if err != nil {
+		return nil, err
+	}
+
+	// Bug compatibility with C bcrypt implementations. They use the trailing
+	// NULL in the key string during expansion.
+	// We copy the key to prevent changing the underlying array.
+	ckey := append(key[:len(key):len(key)], 0)
+
+	c, err := blowfish.NewSaltedCipher(ckey, csalt)
+	if err != nil {
+		return nil, err
+	}
+
+	var i, rounds uint64
+	rounds = 1 << cost
+	for i = 0; i < rounds; i++ {
+		blowfish.ExpandKey(ckey, c)
+		blowfish.ExpandKey(csalt, c)
+	}
+
+	return c, nil
+}
+
+func (p *hashed) Hash() []byte {
+	arr := make([]byte, 60)
+	arr[0] = '$'
+	arr[1] = p.major
+	n := 2
+	if p.minor != 0 {
+		arr[2] = p.minor
+		n = 3
+	}
+	arr[n] = '$'
+	n++
+	copy(arr[n:], []byte(fmt.Sprintf("%02d", p.cost)))
+	n += 2
+	arr[n] = '$'
+	n++
+	copy(arr[n:], p.salt)
+	n += encodedSaltSize
+	copy(arr[n:], p.hash)
+	n += encodedHashSize
+	return arr[:n]
+}
+
+func (p *hashed) decodeVersion(sbytes []byte) (int, error) {
+	if sbytes[0] != '$' {
+		return -1, InvalidHashPrefixError(sbytes[0])
+	}
+	if sbytes[1] > majorVersion {
+		return -1, HashVersionTooNewError(sbytes[1])
+	}
+	p.major = sbytes[1]
+	n := 3
+	if sbytes[2] != '$' {
+		p.minor = sbytes[2]
+		n++
+	}
+	return n, nil
+}
+
+// sbytes should begin where decodeVersion left off.
+func (p *hashed) decodeCost(sbytes []byte) (int, error) {
+	cost, err := strconv.Atoi(string(sbytes[0:2]))
+	if err != nil {
+		return -1, err
+	}
+	err = checkCost(cost)
+	if err != nil {
+		return -1, err
+	}
+	p.cost = cost
+	return 3, nil
+}
+
+func (p *hashed) String() string {
+	return fmt.Sprintf("&{hash: %#v, salt: %#v, cost: %d, major: %c, minor: %c}", string(p.hash), p.salt, p.cost, p.major, p.minor)
+}
+
+func checkCost(cost int) error {
+	if cost < MinCost || cost > MaxCost {
+		return InvalidCostError(cost)
+	}
+	return nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
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diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/block.go b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/block.go
new file mode 100644
index 00000000..9d80f195
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/block.go
@@ -0,0 +1,159 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package blowfish
+
+// getNextWord returns the next big-endian uint32 value from the byte slice
+// at the given position in a circular manner, updating the position.
+func getNextWord(b []byte, pos *int) uint32 {
+	var w uint32
+	j := *pos
+	for i := 0; i < 4; i++ {
+		w = w<<8 | uint32(b[j])
+		j++
+		if j >= len(b) {
+			j = 0
+		}
+	}
+	*pos = j
+	return w
+}
+
+// ExpandKey performs a key expansion on the given *Cipher. Specifically, it
+// performs the Blowfish algorithm's key schedule which sets up the *Cipher's
+// pi and substitution tables for calls to Encrypt. This is used, primarily,
+// by the bcrypt package to reuse the Blowfish key schedule during its
+// set up. It's unlikely that you need to use this directly.
+func ExpandKey(key []byte, c *Cipher) {
+	j := 0
+	for i := 0; i < 18; i++ {
+		// Using inlined getNextWord for performance.
+		var d uint32
+		for k := 0; k < 4; k++ {
+			d = d<<8 | uint32(key[j])
+			j++
+			if j >= len(key) {
+				j = 0
+			}
+		}
+		c.p[i] ^= d
+	}
+
+	var l, r uint32
+	for i := 0; i < 18; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.p[i], c.p[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s0[i], c.s0[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s1[i], c.s1[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s2[i], c.s2[i+1] = l, r
+	}
+	for i := 0; i < 256; i += 2 {
+		l, r = encryptBlock(l, r, c)
+		c.s3[i], c.s3[i+1] = l, r
+	}
+}
+
+// This is similar to ExpandKey, but folds the salt during the key
+// schedule. While ExpandKey is essentially expandKeyWithSalt with an all-zero
+// salt passed in, reusing ExpandKey turns out to be a place of inefficiency
+// and specializing it here is useful.
+func expandKeyWithSalt(key []byte, salt []byte, c *Cipher) {
+	j := 0
+	for i := 0; i < 18; i++ {
+		c.p[i] ^= getNextWord(key, &j)
+	}
+
+	j = 0
+	var l, r uint32
+	for i := 0; i < 18; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.p[i], c.p[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s0[i], c.s0[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s1[i], c.s1[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s2[i], c.s2[i+1] = l, r
+	}
+
+	for i := 0; i < 256; i += 2 {
+		l ^= getNextWord(salt, &j)
+		r ^= getNextWord(salt, &j)
+		l, r = encryptBlock(l, r, c)
+		c.s3[i], c.s3[i+1] = l, r
+	}
+}
+
+func encryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {
+	xl, xr := l, r
+	xl ^= c.p[0]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[1]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[2]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[3]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[4]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[5]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[6]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[7]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[8]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[9]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[10]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[11]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[12]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[13]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[14]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[15]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[16]
+	xr ^= c.p[17]
+	return xr, xl
+}
+
+func decryptBlock(l, r uint32, c *Cipher) (uint32, uint32) {
+	xl, xr := l, r
+	xl ^= c.p[17]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[16]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[15]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[14]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[13]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[12]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[11]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[10]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[9]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[8]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[7]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[6]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[5]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[4]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[3]
+	xr ^= ((c.s0[byte(xl>>24)] + c.s1[byte(xl>>16)]) ^ c.s2[byte(xl>>8)]) + c.s3[byte(xl)] ^ c.p[2]
+	xl ^= ((c.s0[byte(xr>>24)] + c.s1[byte(xr>>16)]) ^ c.s2[byte(xr>>8)]) + c.s3[byte(xr)] ^ c.p[1]
+	xr ^= c.p[0]
+	return xr, xl
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/cipher.go b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/cipher.go
new file mode 100644
index 00000000..2641dadd
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/cipher.go
@@ -0,0 +1,91 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.
+package blowfish // import "golang.org/x/crypto/blowfish"
+
+// The code is a port of Bruce Schneier's C implementation.
+// See https://www.schneier.com/blowfish.html.
+
+import "strconv"
+
+// The Blowfish block size in bytes.
+const BlockSize = 8
+
+// A Cipher is an instance of Blowfish encryption using a particular key.
+type Cipher struct {
+	p              [18]uint32
+	s0, s1, s2, s3 [256]uint32
+}
+
+type KeySizeError int
+
+func (k KeySizeError) Error() string {
+	return "crypto/blowfish: invalid key size " + strconv.Itoa(int(k))
+}
+
+// NewCipher creates and returns a Cipher.
+// The key argument should be the Blowfish key, from 1 to 56 bytes.
+func NewCipher(key []byte) (*Cipher, error) {
+	var result Cipher
+	if k := len(key); k < 1 || k > 56 {
+		return nil, KeySizeError(k)
+	}
+	initCipher(&result)
+	ExpandKey(key, &result)
+	return &result, nil
+}
+
+// NewSaltedCipher creates a returns a Cipher that folds a salt into its key
+// schedule. For most purposes, NewCipher, instead of NewSaltedCipher, is
+// sufficient and desirable. For bcrypt compatibility, the key can be over 56
+// bytes.
+func NewSaltedCipher(key, salt []byte) (*Cipher, error) {
+	if len(salt) == 0 {
+		return NewCipher(key)
+	}
+	var result Cipher
+	if k := len(key); k < 1 {
+		return nil, KeySizeError(k)
+	}
+	initCipher(&result)
+	expandKeyWithSalt(key, salt, &result)
+	return &result, nil
+}
+
+// BlockSize returns the Blowfish block size, 8 bytes.
+// It is necessary to satisfy the Block interface in the
+// package "crypto/cipher".
+func (c *Cipher) BlockSize() int { return BlockSize }
+
+// Encrypt encrypts the 8-byte buffer src using the key k
+// and stores the result in dst.
+// Note that for amounts of data larger than a block,
+// it is not safe to just call Encrypt on successive blocks;
+// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
+func (c *Cipher) Encrypt(dst, src []byte) {
+	l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
+	r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
+	l, r = encryptBlock(l, r, c)
+	dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
+	dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
+}
+
+// Decrypt decrypts the 8-byte buffer src using the key k
+// and stores the result in dst.
+func (c *Cipher) Decrypt(dst, src []byte) {
+	l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
+	r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
+	l, r = decryptBlock(l, r, c)
+	dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
+	dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
+}
+
+func initCipher(c *Cipher) {
+	copy(c.p[0:], p[0:])
+	copy(c.s0[0:], s0[0:])
+	copy(c.s1[0:], s1[0:])
+	copy(c.s2[0:], s2[0:])
+	copy(c.s3[0:], s3[0:])
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/const.go b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/const.go
new file mode 100644
index 00000000..d0407759
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/golang.org/x/crypto/blowfish/const.go
@@ -0,0 +1,199 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The startup permutation array and substitution boxes.
+// They are the hexadecimal digits of PI; see:
+// https://www.schneier.com/code/constants.txt.
+
+package blowfish
+
+var s0 = [256]uint32{
+	0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96,
+	0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
+	0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658,
+	0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
+	0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e,
+	0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
+	0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6,
+	0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
+	0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c,
+	0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
+	0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1,
+	0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
+	0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a,
+	0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
+	0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176,
+	0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
+	0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706,
+	0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
+	0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b,
+	0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
+	0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c,
+	0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
+	0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a,
+	0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
+	0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760,
+	0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
+	0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8,
+	0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
+	0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33,
+	0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
+	0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0,
+	0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
+	0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777,
+	0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
+	0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705,
+	0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
+	0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e,
+	0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
+	0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9,
+	0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
+	0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f,
+	0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
+	0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
+}
+
+var s1 = [256]uint32{
+	0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d,
+	0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
+	0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65,
+	0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
+	0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
+	0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
+	0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d,
+	0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
+	0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc,
+	0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
+	0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908,
+	0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
+	0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124,
+	0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
+	0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
+	0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
+	0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b,
+	0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
+	0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
+	0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
+	0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
+	0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
+	0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5,
+	0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
+	0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
+	0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
+	0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
+	0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
+	0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77,
+	0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
+	0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054,
+	0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
+	0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea,
+	0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
+	0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
+	0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
+	0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea,
+	0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
+	0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e,
+	0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
+	0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
+	0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
+	0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
+}
+
+var s2 = [256]uint32{
+	0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7,
+	0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
+	0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af,
+	0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
+	0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4,
+	0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
+	0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec,
+	0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
+	0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332,
+	0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
+	0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58,
+	0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
+	0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22,
+	0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
+	0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60,
+	0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
+	0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99,
+	0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
+	0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74,
+	0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
+	0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3,
+	0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
+	0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979,
+	0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
+	0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa,
+	0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
+	0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086,
+	0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
+	0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24,
+	0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
+	0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84,
+	0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
+	0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09,
+	0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
+	0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe,
+	0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
+	0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0,
+	0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
+	0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188,
+	0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
+	0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8,
+	0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
+	0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
+}
+
+var s3 = [256]uint32{
+	0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742,
+	0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
+	0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79,
+	0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
+	0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
+	0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
+	0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1,
+	0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
+	0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797,
+	0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
+	0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6,
+	0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
+	0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba,
+	0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
+	0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
+	0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
+	0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce,
+	0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
+	0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd,
+	0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
+	0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb,
+	0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
+	0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc,
+	0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
+	0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
+	0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
+	0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a,
+	0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
+	0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a,
+	0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
+	0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b,
+	0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
+	0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e,
+	0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
+	0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
+	0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
+	0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a,
+	0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
+	0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3,
+	0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
+	0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c,
+	0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
+	0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
+}
+
+var p = [18]uint32{
+	0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
+	0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+	0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b,
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
+You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
+You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
+webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
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+
+The software is released under the terms of the GNU Affero General Public
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+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/ber.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/ber.go
new file mode 100644
index 00000000..25cc921b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/ber.go
@@ -0,0 +1,504 @@
+package ber
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+)
+
+type Packet struct {
+	Identifier
+	Value       interface{}
+	ByteValue   []byte
+	Data        *bytes.Buffer
+	Children    []*Packet
+	Description string
+}
+
+type Identifier struct {
+	ClassType Class
+	TagType   Type
+	Tag       Tag
+}
+
+type Tag uint64
+
+const (
+	TagEOC              Tag = 0x00
+	TagBoolean          Tag = 0x01
+	TagInteger          Tag = 0x02
+	TagBitString        Tag = 0x03
+	TagOctetString      Tag = 0x04
+	TagNULL             Tag = 0x05
+	TagObjectIdentifier Tag = 0x06
+	TagObjectDescriptor Tag = 0x07
+	TagExternal         Tag = 0x08
+	TagRealFloat        Tag = 0x09
+	TagEnumerated       Tag = 0x0a
+	TagEmbeddedPDV      Tag = 0x0b
+	TagUTF8String       Tag = 0x0c
+	TagRelativeOID      Tag = 0x0d
+	TagSequence         Tag = 0x10
+	TagSet              Tag = 0x11
+	TagNumericString    Tag = 0x12
+	TagPrintableString  Tag = 0x13
+	TagT61String        Tag = 0x14
+	TagVideotexString   Tag = 0x15
+	TagIA5String        Tag = 0x16
+	TagUTCTime          Tag = 0x17
+	TagGeneralizedTime  Tag = 0x18
+	TagGraphicString    Tag = 0x19
+	TagVisibleString    Tag = 0x1a
+	TagGeneralString    Tag = 0x1b
+	TagUniversalString  Tag = 0x1c
+	TagCharacterString  Tag = 0x1d
+	TagBMPString        Tag = 0x1e
+	TagBitmask          Tag = 0x1f // xxx11111b
+
+	// HighTag indicates the start of a high-tag byte sequence
+	HighTag Tag = 0x1f // xxx11111b
+	// HighTagContinueBitmask indicates the high-tag byte sequence should continue
+	HighTagContinueBitmask Tag = 0x80 // 10000000b
+	// HighTagValueBitmask obtains the tag value from a high-tag byte sequence byte
+	HighTagValueBitmask Tag = 0x7f // 01111111b
+)
+
+const (
+	// LengthLongFormBitmask is the mask to apply to the length byte to see if a long-form byte sequence is used
+	LengthLongFormBitmask = 0x80
+	// LengthValueBitmask is the mask to apply to the length byte to get the number of bytes in the long-form byte sequence
+	LengthValueBitmask = 0x7f
+
+	// LengthIndefinite is returned from readLength to indicate an indefinite length
+	LengthIndefinite = -1
+)
+
+var tagMap = map[Tag]string{
+	TagEOC:              "EOC (End-of-Content)",
+	TagBoolean:          "Boolean",
+	TagInteger:          "Integer",
+	TagBitString:        "Bit String",
+	TagOctetString:      "Octet String",
+	TagNULL:             "NULL",
+	TagObjectIdentifier: "Object Identifier",
+	TagObjectDescriptor: "Object Descriptor",
+	TagExternal:         "External",
+	TagRealFloat:        "Real (float)",
+	TagEnumerated:       "Enumerated",
+	TagEmbeddedPDV:      "Embedded PDV",
+	TagUTF8String:       "UTF8 String",
+	TagRelativeOID:      "Relative-OID",
+	TagSequence:         "Sequence and Sequence of",
+	TagSet:              "Set and Set OF",
+	TagNumericString:    "Numeric String",
+	TagPrintableString:  "Printable String",
+	TagT61String:        "T61 String",
+	TagVideotexString:   "Videotex String",
+	TagIA5String:        "IA5 String",
+	TagUTCTime:          "UTC Time",
+	TagGeneralizedTime:  "Generalized Time",
+	TagGraphicString:    "Graphic String",
+	TagVisibleString:    "Visible String",
+	TagGeneralString:    "General String",
+	TagUniversalString:  "Universal String",
+	TagCharacterString:  "Character String",
+	TagBMPString:        "BMP String",
+}
+
+type Class uint8
+
+const (
+	ClassUniversal   Class = 0   // 00xxxxxxb
+	ClassApplication Class = 64  // 01xxxxxxb
+	ClassContext     Class = 128 // 10xxxxxxb
+	ClassPrivate     Class = 192 // 11xxxxxxb
+	ClassBitmask     Class = 192 // 11xxxxxxb
+)
+
+var ClassMap = map[Class]string{
+	ClassUniversal:   "Universal",
+	ClassApplication: "Application",
+	ClassContext:     "Context",
+	ClassPrivate:     "Private",
+}
+
+type Type uint8
+
+const (
+	TypePrimitive   Type = 0  // xx0xxxxxb
+	TypeConstructed Type = 32 // xx1xxxxxb
+	TypeBitmask     Type = 32 // xx1xxxxxb
+)
+
+var TypeMap = map[Type]string{
+	TypePrimitive:   "Primitive",
+	TypeConstructed: "Constructed",
+}
+
+var Debug bool = false
+
+func PrintBytes(out io.Writer, buf []byte, indent string) {
+	data_lines := make([]string, (len(buf)/30)+1)
+	num_lines := make([]string, (len(buf)/30)+1)
+
+	for i, b := range buf {
+		data_lines[i/30] += fmt.Sprintf("%02x ", b)
+		num_lines[i/30] += fmt.Sprintf("%02d ", (i+1)%100)
+	}
+
+	for i := 0; i < len(data_lines); i++ {
+		out.Write([]byte(indent + data_lines[i] + "\n"))
+		out.Write([]byte(indent + num_lines[i] + "\n\n"))
+	}
+}
+
+func PrintPacket(p *Packet) {
+	printPacket(os.Stdout, p, 0, false)
+}
+
+func printPacket(out io.Writer, p *Packet, indent int, printBytes bool) {
+	indent_str := ""
+
+	for len(indent_str) != indent {
+		indent_str += " "
+	}
+
+	class_str := ClassMap[p.ClassType]
+
+	tagtype_str := TypeMap[p.TagType]
+
+	tag_str := fmt.Sprintf("0x%02X", p.Tag)
+
+	if p.ClassType == ClassUniversal {
+		tag_str = tagMap[p.Tag]
+	}
+
+	value := fmt.Sprint(p.Value)
+	description := ""
+
+	if p.Description != "" {
+		description = p.Description + ": "
+	}
+
+	fmt.Fprintf(out, "%s%s(%s, %s, %s) Len=%d %q\n", indent_str, description, class_str, tagtype_str, tag_str, p.Data.Len(), value)
+
+	if printBytes {
+		PrintBytes(out, p.Bytes(), indent_str)
+	}
+
+	for _, child := range p.Children {
+		printPacket(out, child, indent+1, printBytes)
+	}
+}
+
+// ReadPacket reads a single Packet from the reader
+func ReadPacket(reader io.Reader) (*Packet, error) {
+	p, _, err := readPacket(reader)
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+func DecodeString(data []byte) string {
+	return string(data)
+}
+
+func parseInt64(bytes []byte) (ret int64, err error) {
+	if len(bytes) > 8 {
+		// We'll overflow an int64 in this case.
+		err = fmt.Errorf("integer too large")
+		return
+	}
+	for bytesRead := 0; bytesRead < len(bytes); bytesRead++ {
+		ret <<= 8
+		ret |= int64(bytes[bytesRead])
+	}
+
+	// Shift up and down in order to sign extend the result.
+	ret <<= 64 - uint8(len(bytes))*8
+	ret >>= 64 - uint8(len(bytes))*8
+	return
+}
+
+func encodeInteger(i int64) []byte {
+	n := int64Length(i)
+	out := make([]byte, n)
+
+	var j int
+	for ; n > 0; n-- {
+		out[j] = (byte(i >> uint((n-1)*8)))
+		j++
+	}
+
+	return out
+}
+
+func int64Length(i int64) (numBytes int) {
+	numBytes = 1
+
+	for i > 127 {
+		numBytes++
+		i >>= 8
+	}
+
+	for i < -128 {
+		numBytes++
+		i >>= 8
+	}
+
+	return
+}
+
+// DecodePacket decodes the given bytes into a single Packet
+// If a decode error is encountered, nil is returned.
+func DecodePacket(data []byte) *Packet {
+	p, _, _ := readPacket(bytes.NewBuffer(data))
+
+	return p
+}
+
+// DecodePacketErr decodes the given bytes into a single Packet
+// If a decode error is encountered, nil is returned
+func DecodePacketErr(data []byte) (*Packet, error) {
+	p, _, err := readPacket(bytes.NewBuffer(data))
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+// readPacket reads a single Packet from the reader, returning the number of bytes read
+func readPacket(reader io.Reader) (*Packet, int, error) {
+	identifier, length, read, err := readHeader(reader)
+	if err != nil {
+		return nil, read, err
+	}
+
+	p := &Packet{
+		Identifier: identifier,
+	}
+
+	p.Data = new(bytes.Buffer)
+	p.Children = make([]*Packet, 0, 2)
+	p.Value = nil
+
+	if p.TagType == TypeConstructed {
+		// TODO: if universal, ensure tag type is allowed to be constructed
+
+		// Track how much content we've read
+		contentRead := 0
+		for {
+			if length != LengthIndefinite {
+				// End if we've read what we've been told to
+				if contentRead == length {
+					break
+				}
+				// Detect if a packet boundary didn't fall on the expected length
+				if contentRead > length {
+					return nil, read, fmt.Errorf("expected to read %d bytes, read %d", length, contentRead)
+				}
+			}
+
+			// Read the next packet
+			child, r, err := readPacket(reader)
+			if err != nil {
+				return nil, read, err
+			}
+			contentRead += r
+			read += r
+
+			// Test is this is the EOC marker for our packet
+			if isEOCPacket(child) {
+				if length == LengthIndefinite {
+					break
+				}
+				return nil, read, errors.New("eoc child not allowed with definite length")
+			}
+
+			// Append and continue
+			p.AppendChild(child)
+		}
+		return p, read, nil
+	}
+
+	if length == LengthIndefinite {
+		return nil, read, errors.New("indefinite length used with primitive type")
+	}
+
+	// Read definite-length content
+	content := make([]byte, length, length)
+	if length > 0 {
+		_, err := io.ReadFull(reader, content)
+		if err != nil {
+			if err == io.EOF {
+				return nil, read, io.ErrUnexpectedEOF
+			}
+			return nil, read, err
+		}
+		read += length
+	}
+
+	if p.ClassType == ClassUniversal {
+		p.Data.Write(content)
+		p.ByteValue = content
+
+		switch p.Tag {
+		case TagEOC:
+		case TagBoolean:
+			val, _ := parseInt64(content)
+
+			p.Value = val != 0
+		case TagInteger:
+			p.Value, _ = parseInt64(content)
+		case TagBitString:
+		case TagOctetString:
+			// the actual string encoding is not known here
+			// (e.g. for LDAP content is already an UTF8-encoded
+			// string). Return the data without further processing
+			p.Value = DecodeString(content)
+		case TagNULL:
+		case TagObjectIdentifier:
+		case TagObjectDescriptor:
+		case TagExternal:
+		case TagRealFloat:
+		case TagEnumerated:
+			p.Value, _ = parseInt64(content)
+		case TagEmbeddedPDV:
+		case TagUTF8String:
+			p.Value = DecodeString(content)
+		case TagRelativeOID:
+		case TagSequence:
+		case TagSet:
+		case TagNumericString:
+		case TagPrintableString:
+			p.Value = DecodeString(content)
+		case TagT61String:
+		case TagVideotexString:
+		case TagIA5String:
+		case TagUTCTime:
+		case TagGeneralizedTime:
+		case TagGraphicString:
+		case TagVisibleString:
+		case TagGeneralString:
+		case TagUniversalString:
+		case TagCharacterString:
+		case TagBMPString:
+		}
+	} else {
+		p.Data.Write(content)
+	}
+
+	return p, read, nil
+}
+
+func (p *Packet) Bytes() []byte {
+	var out bytes.Buffer
+
+	out.Write(encodeIdentifier(p.Identifier))
+	out.Write(encodeLength(p.Data.Len()))
+	out.Write(p.Data.Bytes())
+
+	return out.Bytes()
+}
+
+func (p *Packet) AppendChild(child *Packet) {
+	p.Data.Write(child.Bytes())
+	p.Children = append(p.Children, child)
+}
+
+func Encode(ClassType Class, TagType Type, Tag Tag, Value interface{}, Description string) *Packet {
+	p := new(Packet)
+
+	p.ClassType = ClassType
+	p.TagType = TagType
+	p.Tag = Tag
+	p.Data = new(bytes.Buffer)
+
+	p.Children = make([]*Packet, 0, 2)
+
+	p.Value = Value
+	p.Description = Description
+
+	if Value != nil {
+		v := reflect.ValueOf(Value)
+
+		if ClassType == ClassUniversal {
+			switch Tag {
+			case TagOctetString:
+				sv, ok := v.Interface().(string)
+
+				if ok {
+					p.Data.Write([]byte(sv))
+				}
+			}
+		}
+	}
+
+	return p
+}
+
+func NewSequence(Description string) *Packet {
+	return Encode(ClassUniversal, TypeConstructed, TagSequence, nil, Description)
+}
+
+func NewBoolean(ClassType Class, TagType Type, Tag Tag, Value bool, Description string) *Packet {
+	intValue := int64(0)
+
+	if Value {
+		intValue = 1
+	}
+
+	p := Encode(ClassType, TagType, Tag, nil, Description)
+
+	p.Value = Value
+	p.Data.Write(encodeInteger(intValue))
+
+	return p
+}
+
+func NewInteger(ClassType Class, TagType Type, Tag Tag, Value interface{}, Description string) *Packet {
+	p := Encode(ClassType, TagType, Tag, nil, Description)
+
+	p.Value = Value
+	switch v := Value.(type) {
+	case int:
+		p.Data.Write(encodeInteger(int64(v)))
+	case uint:
+		p.Data.Write(encodeInteger(int64(v)))
+	case int64:
+		p.Data.Write(encodeInteger(v))
+	case uint64:
+		// TODO : check range or add encodeUInt...
+		p.Data.Write(encodeInteger(int64(v)))
+	case int32:
+		p.Data.Write(encodeInteger(int64(v)))
+	case uint32:
+		p.Data.Write(encodeInteger(int64(v)))
+	case int16:
+		p.Data.Write(encodeInteger(int64(v)))
+	case uint16:
+		p.Data.Write(encodeInteger(int64(v)))
+	case int8:
+		p.Data.Write(encodeInteger(int64(v)))
+	case uint8:
+		p.Data.Write(encodeInteger(int64(v)))
+	default:
+		// TODO : add support for big.Int ?
+		panic(fmt.Sprintf("Invalid type %T, expected {u|}int{64|32|16|8}", v))
+	}
+
+	return p
+}
+
+func NewString(ClassType Class, TagType Type, Tag Tag, Value, Description string) *Packet {
+	p := Encode(ClassType, TagType, Tag, nil, Description)
+
+	p.Value = Value
+	p.Data.Write([]byte(Value))
+
+	return p
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/content_int.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/content_int.go
new file mode 100644
index 00000000..1858b74b
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/content_int.go
@@ -0,0 +1,25 @@
+package ber
+
+func encodeUnsignedInteger(i uint64) []byte {
+	n := uint64Length(i)
+	out := make([]byte, n)
+
+	var j int
+	for ; n > 0; n-- {
+		out[j] = (byte(i >> uint((n-1)*8)))
+		j++
+	}
+
+	return out
+}
+
+func uint64Length(i uint64) (numBytes int) {
+	numBytes = 1
+
+	for i > 255 {
+		numBytes++
+		i >>= 8
+	}
+
+	return
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/header.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/header.go
new file mode 100644
index 00000000..123744e9
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/header.go
@@ -0,0 +1,29 @@
+package ber
+
+import (
+	"errors"
+	"io"
+)
+
+func readHeader(reader io.Reader) (identifier Identifier, length int, read int, err error) {
+	if i, c, err := readIdentifier(reader); err != nil {
+		return Identifier{}, 0, read, err
+	} else {
+		identifier = i
+		read += c
+	}
+
+	if l, c, err := readLength(reader); err != nil {
+		return Identifier{}, 0, read, err
+	} else {
+		length = l
+		read += c
+	}
+
+	// Validate length type with identifier (x.600, 8.1.3.2.a)
+	if length == LengthIndefinite && identifier.TagType == TypePrimitive {
+		return Identifier{}, 0, read, errors.New("indefinite length used with primitive type")
+	}
+
+	return identifier, length, read, nil
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/identifier.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/identifier.go
new file mode 100644
index 00000000..f7672a84
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/identifier.go
@@ -0,0 +1,103 @@
+package ber
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"math"
+)
+
+func readIdentifier(reader io.Reader) (Identifier, int, error) {
+	identifier := Identifier{}
+	read := 0
+
+	// identifier byte
+	b, err := readByte(reader)
+	if err != nil {
+		if Debug {
+			fmt.Printf("error reading identifier byte: %v\n", err)
+		}
+		return Identifier{}, read, err
+	}
+	read++
+
+	identifier.ClassType = Class(b) & ClassBitmask
+	identifier.TagType = Type(b) & TypeBitmask
+
+	if tag := Tag(b) & TagBitmask; tag != HighTag {
+		// short-form tag
+		identifier.Tag = tag
+		return identifier, read, nil
+	}
+
+	// high-tag-number tag
+	tagBytes := 0
+	for {
+		b, err := readByte(reader)
+		if err != nil {
+			if Debug {
+				fmt.Printf("error reading high-tag-number tag byte %d: %v\n", tagBytes, err)
+			}
+			return Identifier{}, read, err
+		}
+		tagBytes++
+		read++
+
+		// Lowest 7 bits get appended to the tag value (x.690, 8.1.2.4.2.b)
+		identifier.Tag <<= 7
+		identifier.Tag |= Tag(b) & HighTagValueBitmask
+
+		// First byte may not be all zeros (x.690, 8.1.2.4.2.c)
+		if tagBytes == 1 && identifier.Tag == 0 {
+			return Identifier{}, read, errors.New("invalid first high-tag-number tag byte")
+		}
+		// Overflow of int64
+		// TODO: support big int tags?
+		if tagBytes > 9 {
+			return Identifier{}, read, errors.New("high-tag-number tag overflow")
+		}
+
+		// Top bit of 0 means this is the last byte in the high-tag-number tag (x.690, 8.1.2.4.2.a)
+		if Tag(b)&HighTagContinueBitmask == 0 {
+			break
+		}
+	}
+
+	return identifier, read, nil
+}
+
+func encodeIdentifier(identifier Identifier) []byte {
+	b := []byte{0x0}
+	b[0] |= byte(identifier.ClassType)
+	b[0] |= byte(identifier.TagType)
+
+	if identifier.Tag < HighTag {
+		// Short-form
+		b[0] |= byte(identifier.Tag)
+	} else {
+		// high-tag-number
+		b[0] |= byte(HighTag)
+
+		tag := identifier.Tag
+
+		highBit := uint(63)
+		for {
+			if tag&(1<<highBit) != 0 {
+				break
+			}
+			highBit--
+		}
+
+		tagBytes := int(math.Ceil(float64(highBit) / 7.0))
+		for i := tagBytes - 1; i >= 0; i-- {
+			offset := uint(i) * 7
+			mask := Tag(0x7f) << offset
+			tagByte := (tag & mask) >> offset
+			if i != 0 {
+				tagByte |= 0x80
+			}
+			b = append(b, byte(tagByte))
+		}
+	}
+	return b
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/length.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/length.go
new file mode 100644
index 00000000..750e8f44
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/length.go
@@ -0,0 +1,81 @@
+package ber
+
+import (
+	"errors"
+	"fmt"
+	"io"
+)
+
+func readLength(reader io.Reader) (length int, read int, err error) {
+	// length byte
+	b, err := readByte(reader)
+	if err != nil {
+		if Debug {
+			fmt.Printf("error reading length byte: %v\n", err)
+		}
+		return 0, 0, err
+	}
+	read++
+
+	switch {
+	case b == 0xFF:
+		// Invalid 0xFF (x.600, 8.1.3.5.c)
+		return 0, read, errors.New("invalid length byte 0xff")
+
+	case b == LengthLongFormBitmask:
+		// Indefinite form, we have to decode packets until we encounter an EOC packet (x.600, 8.1.3.6)
+		length = LengthIndefinite
+
+	case b&LengthLongFormBitmask == 0:
+		// Short definite form, extract the length from the bottom 7 bits (x.600, 8.1.3.4)
+		length = int(b) & LengthValueBitmask
+
+	case b&LengthLongFormBitmask != 0:
+		// Long definite form, extract the number of length bytes to follow from the bottom 7 bits (x.600, 8.1.3.5.b)
+		lengthBytes := int(b) & LengthValueBitmask
+		// Protect against overflow
+		// TODO: support big int length?
+		if lengthBytes > 8 {
+			return 0, read, errors.New("long-form length overflow")
+		}
+
+		// Accumulate into a 64-bit variable
+		var length64 int64
+		for i := 0; i < lengthBytes; i++ {
+			b, err = readByte(reader)
+			if err != nil {
+				if Debug {
+					fmt.Printf("error reading long-form length byte %d: %v\n", i, err)
+				}
+				return 0, read, err
+			}
+			read++
+
+			// x.600, 8.1.3.5
+			length64 <<= 8
+			length64 |= int64(b)
+		}
+
+		// Cast to a platform-specific integer
+		length = int(length64)
+		// Ensure we didn't overflow
+		if int64(length) != length64 {
+			return 0, read, errors.New("long-form length overflow")
+		}
+
+	default:
+		return 0, read, errors.New("invalid length byte")
+	}
+
+	return length, read, nil
+}
+
+func encodeLength(length int) []byte {
+	length_bytes := encodeUnsignedInteger(uint64(length))
+	if length > 127 || len(length_bytes) > 1 {
+		longFormBytes := []byte{(LengthLongFormBitmask | byte(len(length_bytes)))}
+		longFormBytes = append(longFormBytes, length_bytes...)
+		length_bytes = longFormBytes
+	}
+	return length_bytes
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/util.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/util.go
new file mode 100644
index 00000000..3e56b66c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/asn1-ber.v1/util.go
@@ -0,0 +1,24 @@
+package ber
+
+import "io"
+
+func readByte(reader io.Reader) (byte, error) {
+	bytes := make([]byte, 1, 1)
+	_, err := io.ReadFull(reader, bytes)
+	if err != nil {
+		if err == io.EOF {
+			return 0, io.ErrUnexpectedEOF
+		}
+		return 0, err
+	}
+	return bytes[0], nil
+}
+
+func isEOCPacket(p *Packet) bool {
+	return p != nil &&
+		p.Tag == TagEOC &&
+		p.ClassType == ClassUniversal &&
+		p.TagType == TypePrimitive &&
+		len(p.ByteValue) == 0 &&
+		len(p.Children) == 0
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/LICENSE.txt b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/LICENSE.txt
new file mode 100644
index 00000000..ead98cf0
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/LICENSE.txt
@@ -0,0 +1,897 @@
+Mattermost Licensing
+
+SOFTWARE LICENSING
+
+You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
+
+-	See MIT-COMPILED-LICENSE.md included in compiled versions for details
+
+You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
+
+1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
+2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
+
+You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
+webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
+
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+
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+
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+The software is released under the terms of the GNU Affero General Public
+License, version 3.
+
+                    GNU AFFERO GENERAL PUBLIC LICENSE
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+
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+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
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+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
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+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
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+doubtful cases shall be resolved in favor of coverage.  For a particular
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+is a consumer product regardless of whether the product has substantial
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+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
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+User Product is transferred to the recipient in perpetuity or for a
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+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
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+requirement to continue to provide support service, warranty, or updates
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+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
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+protocols for communication across the network.
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+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
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+
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+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/apic.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/apic.go
new file mode 100644
index 00000000..95ec014e
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/apic.go
@@ -0,0 +1,742 @@
+package yaml
+
+import (
+	"io"
+	"os"
+)
+
+func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) {
+	//fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens))
+
+	// Check if we can move the queue at the beginning of the buffer.
+	if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) {
+		if parser.tokens_head != len(parser.tokens) {
+			copy(parser.tokens, parser.tokens[parser.tokens_head:])
+		}
+		parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head]
+		parser.tokens_head = 0
+	}
+	parser.tokens = append(parser.tokens, *token)
+	if pos < 0 {
+		return
+	}
+	copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:])
+	parser.tokens[parser.tokens_head+pos] = *token
+}
+
+// Create a new parser object.
+func yaml_parser_initialize(parser *yaml_parser_t) bool {
+	*parser = yaml_parser_t{
+		raw_buffer: make([]byte, 0, input_raw_buffer_size),
+		buffer:     make([]byte, 0, input_buffer_size),
+	}
+	return true
+}
+
+// Destroy a parser object.
+func yaml_parser_delete(parser *yaml_parser_t) {
+	*parser = yaml_parser_t{}
+}
+
+// String read handler.
+func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	if parser.input_pos == len(parser.input) {
+		return 0, io.EOF
+	}
+	n = copy(buffer, parser.input[parser.input_pos:])
+	parser.input_pos += n
+	return n, nil
+}
+
+// File read handler.
+func yaml_file_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	return parser.input_file.Read(buffer)
+}
+
+// Set a string input.
+func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_string_read_handler
+	parser.input = input
+	parser.input_pos = 0
+}
+
+// Set a file input.
+func yaml_parser_set_input_file(parser *yaml_parser_t, file *os.File) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_file_read_handler
+	parser.input_file = file
+}
+
+// Set the source encoding.
+func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) {
+	if parser.encoding != yaml_ANY_ENCODING {
+		panic("must set the encoding only once")
+	}
+	parser.encoding = encoding
+}
+
+// Create a new emitter object.
+func yaml_emitter_initialize(emitter *yaml_emitter_t) bool {
+	*emitter = yaml_emitter_t{
+		buffer:     make([]byte, output_buffer_size),
+		raw_buffer: make([]byte, 0, output_raw_buffer_size),
+		states:     make([]yaml_emitter_state_t, 0, initial_stack_size),
+		events:     make([]yaml_event_t, 0, initial_queue_size),
+	}
+	return true
+}
+
+// Destroy an emitter object.
+func yaml_emitter_delete(emitter *yaml_emitter_t) {
+	*emitter = yaml_emitter_t{}
+}
+
+// String write handler.
+func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	*emitter.output_buffer = append(*emitter.output_buffer, buffer...)
+	return nil
+}
+
+// File write handler.
+func yaml_file_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	_, err := emitter.output_file.Write(buffer)
+	return err
+}
+
+// Set a string output.
+func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_string_write_handler
+	emitter.output_buffer = output_buffer
+}
+
+// Set a file output.
+func yaml_emitter_set_output_file(emitter *yaml_emitter_t, file io.Writer) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_file_write_handler
+	emitter.output_file = file
+}
+
+// Set the output encoding.
+func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) {
+	if emitter.encoding != yaml_ANY_ENCODING {
+		panic("must set the output encoding only once")
+	}
+	emitter.encoding = encoding
+}
+
+// Set the canonical output style.
+func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) {
+	emitter.canonical = canonical
+}
+
+//// Set the indentation increment.
+func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) {
+	if indent < 2 || indent > 9 {
+		indent = 2
+	}
+	emitter.best_indent = indent
+}
+
+// Set the preferred line width.
+func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) {
+	if width < 0 {
+		width = -1
+	}
+	emitter.best_width = width
+}
+
+// Set if unescaped non-ASCII characters are allowed.
+func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) {
+	emitter.unicode = unicode
+}
+
+// Set the preferred line break character.
+func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) {
+	emitter.line_break = line_break
+}
+
+///*
+// * Destroy a token object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_token_delete(yaml_token_t *token)
+//{
+//    assert(token);  // Non-NULL token object expected.
+//
+//    switch (token.type)
+//    {
+//        case YAML_TAG_DIRECTIVE_TOKEN:
+//            yaml_free(token.data.tag_directive.handle);
+//            yaml_free(token.data.tag_directive.prefix);
+//            break;
+//
+//        case YAML_ALIAS_TOKEN:
+//            yaml_free(token.data.alias.value);
+//            break;
+//
+//        case YAML_ANCHOR_TOKEN:
+//            yaml_free(token.data.anchor.value);
+//            break;
+//
+//        case YAML_TAG_TOKEN:
+//            yaml_free(token.data.tag.handle);
+//            yaml_free(token.data.tag.suffix);
+//            break;
+//
+//        case YAML_SCALAR_TOKEN:
+//            yaml_free(token.data.scalar.value);
+//            break;
+//
+//        default:
+//            break;
+//    }
+//
+//    memset(token, 0, sizeof(yaml_token_t));
+//}
+//
+///*
+// * Check if a string is a valid UTF-8 sequence.
+// *
+// * Check 'reader.c' for more details on UTF-8 encoding.
+// */
+//
+//static int
+//yaml_check_utf8(yaml_char_t *start, size_t length)
+//{
+//    yaml_char_t *end = start+length;
+//    yaml_char_t *pointer = start;
+//
+//    while (pointer < end) {
+//        unsigned char octet;
+//        unsigned int width;
+//        unsigned int value;
+//        size_t k;
+//
+//        octet = pointer[0];
+//        width = (octet & 0x80) == 0x00 ? 1 :
+//                (octet & 0xE0) == 0xC0 ? 2 :
+//                (octet & 0xF0) == 0xE0 ? 3 :
+//                (octet & 0xF8) == 0xF0 ? 4 : 0;
+//        value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+//                (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+//                (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+//                (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+//        if (!width) return 0;
+//        if (pointer+width > end) return 0;
+//        for (k = 1; k < width; k ++) {
+//            octet = pointer[k];
+//            if ((octet & 0xC0) != 0x80) return 0;
+//            value = (value << 6) + (octet & 0x3F);
+//        }
+//        if (!((width == 1) ||
+//            (width == 2 && value >= 0x80) ||
+//            (width == 3 && value >= 0x800) ||
+//            (width == 4 && value >= 0x10000))) return 0;
+//
+//        pointer += width;
+//    }
+//
+//    return 1;
+//}
+//
+
+// Create STREAM-START.
+func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_STREAM_START_EVENT,
+		encoding: encoding,
+	}
+	return true
+}
+
+// Create STREAM-END.
+func yaml_stream_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_STREAM_END_EVENT,
+	}
+	return true
+}
+
+// Create DOCUMENT-START.
+func yaml_document_start_event_initialize(event *yaml_event_t, version_directive *yaml_version_directive_t,
+	tag_directives []yaml_tag_directive_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:               yaml_DOCUMENT_START_EVENT,
+		version_directive: version_directive,
+		tag_directives:    tag_directives,
+		implicit:          implicit,
+	}
+	return true
+}
+
+// Create DOCUMENT-END.
+func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:      yaml_DOCUMENT_END_EVENT,
+		implicit: implicit,
+	}
+	return true
+}
+
+///*
+// * Create ALIAS.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_alias_event_initialize(event *yaml_event_t, anchor *yaml_char_t)
+//{
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    anchor_copy *yaml_char_t = NULL
+//
+//    assert(event) // Non-NULL event object is expected.
+//    assert(anchor) // Non-NULL anchor is expected.
+//
+//    if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0
+//
+//    anchor_copy = yaml_strdup(anchor)
+//    if (!anchor_copy)
+//        return 0
+//
+//    ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark)
+//
+//    return 1
+//}
+
+// Create SCALAR.
+func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool {
+	*event = yaml_event_t{
+		typ:             yaml_SCALAR_EVENT,
+		anchor:          anchor,
+		tag:             tag,
+		value:           value,
+		implicit:        plain_implicit,
+		quoted_implicit: quoted_implicit,
+		style:           yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-START.
+func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_SEQUENCE_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-END.
+func yaml_sequence_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_SEQUENCE_END_EVENT,
+	}
+	return true
+}
+
+// Create MAPPING-START.
+func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_MAPPING_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create MAPPING-END.
+func yaml_mapping_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_MAPPING_END_EVENT,
+	}
+	return true
+}
+
+// Destroy an event object.
+func yaml_event_delete(event *yaml_event_t) {
+	*event = yaml_event_t{}
+}
+
+///*
+// * Create a document object.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_initialize(document *yaml_document_t,
+//        version_directive *yaml_version_directive_t,
+//        tag_directives_start *yaml_tag_directive_t,
+//        tag_directives_end *yaml_tag_directive_t,
+//        start_implicit int, end_implicit int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    struct {
+//        start *yaml_node_t
+//        end *yaml_node_t
+//        top *yaml_node_t
+//    } nodes = { NULL, NULL, NULL }
+//    version_directive_copy *yaml_version_directive_t = NULL
+//    struct {
+//        start *yaml_tag_directive_t
+//        end *yaml_tag_directive_t
+//        top *yaml_tag_directive_t
+//    } tag_directives_copy = { NULL, NULL, NULL }
+//    value yaml_tag_directive_t = { NULL, NULL }
+//    mark yaml_mark_t = { 0, 0, 0 }
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert((tag_directives_start && tag_directives_end) ||
+//            (tag_directives_start == tag_directives_end))
+//                            // Valid tag directives are expected.
+//
+//    if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error
+//
+//    if (version_directive) {
+//        version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t))
+//        if (!version_directive_copy) goto error
+//        version_directive_copy.major = version_directive.major
+//        version_directive_copy.minor = version_directive.minor
+//    }
+//
+//    if (tag_directives_start != tag_directives_end) {
+//        tag_directive *yaml_tag_directive_t
+//        if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+//            goto error
+//        for (tag_directive = tag_directives_start
+//                tag_directive != tag_directives_end; tag_directive ++) {
+//            assert(tag_directive.handle)
+//            assert(tag_directive.prefix)
+//            if (!yaml_check_utf8(tag_directive.handle,
+//                        strlen((char *)tag_directive.handle)))
+//                goto error
+//            if (!yaml_check_utf8(tag_directive.prefix,
+//                        strlen((char *)tag_directive.prefix)))
+//                goto error
+//            value.handle = yaml_strdup(tag_directive.handle)
+//            value.prefix = yaml_strdup(tag_directive.prefix)
+//            if (!value.handle || !value.prefix) goto error
+//            if (!PUSH(&context, tag_directives_copy, value))
+//                goto error
+//            value.handle = NULL
+//            value.prefix = NULL
+//        }
+//    }
+//
+//    DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
+//            tag_directives_copy.start, tag_directives_copy.top,
+//            start_implicit, end_implicit, mark, mark)
+//
+//    return 1
+//
+//error:
+//    STACK_DEL(&context, nodes)
+//    yaml_free(version_directive_copy)
+//    while (!STACK_EMPTY(&context, tag_directives_copy)) {
+//        value yaml_tag_directive_t = POP(&context, tag_directives_copy)
+//        yaml_free(value.handle)
+//        yaml_free(value.prefix)
+//    }
+//    STACK_DEL(&context, tag_directives_copy)
+//    yaml_free(value.handle)
+//    yaml_free(value.prefix)
+//
+//    return 0
+//}
+//
+///*
+// * Destroy a document object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_document_delete(document *yaml_document_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    tag_directive *yaml_tag_directive_t
+//
+//    context.error = YAML_NO_ERROR // Eliminate a compliler warning.
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    while (!STACK_EMPTY(&context, document.nodes)) {
+//        node yaml_node_t = POP(&context, document.nodes)
+//        yaml_free(node.tag)
+//        switch (node.type) {
+//            case YAML_SCALAR_NODE:
+//                yaml_free(node.data.scalar.value)
+//                break
+//            case YAML_SEQUENCE_NODE:
+//                STACK_DEL(&context, node.data.sequence.items)
+//                break
+//            case YAML_MAPPING_NODE:
+//                STACK_DEL(&context, node.data.mapping.pairs)
+//                break
+//            default:
+//                assert(0) // Should not happen.
+//        }
+//    }
+//    STACK_DEL(&context, document.nodes)
+//
+//    yaml_free(document.version_directive)
+//    for (tag_directive = document.tag_directives.start
+//            tag_directive != document.tag_directives.end
+//            tag_directive++) {
+//        yaml_free(tag_directive.handle)
+//        yaml_free(tag_directive.prefix)
+//    }
+//    yaml_free(document.tag_directives.start)
+//
+//    memset(document, 0, sizeof(yaml_document_t))
+//}
+//
+///**
+// * Get a document node.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_node(document *yaml_document_t, index int)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (index > 0 && document.nodes.start + index <= document.nodes.top) {
+//        return document.nodes.start + index - 1
+//    }
+//    return NULL
+//}
+//
+///**
+// * Get the root object.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_root_node(document *yaml_document_t)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (document.nodes.top != document.nodes.start) {
+//        return document.nodes.start
+//    }
+//    return NULL
+//}
+//
+///*
+// * Add a scalar node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_scalar(document *yaml_document_t,
+//        tag *yaml_char_t, value *yaml_char_t, length int,
+//        style yaml_scalar_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    value_copy *yaml_char_t = NULL
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert(value) // Non-NULL value is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (length < 0) {
+//        length = strlen((char *)value)
+//    }
+//
+//    if (!yaml_check_utf8(value, length)) goto error
+//    value_copy = yaml_malloc(length+1)
+//    if (!value_copy) goto error
+//    memcpy(value_copy, value, length)
+//    value_copy[length] = '\0'
+//
+//    SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    yaml_free(tag_copy)
+//    yaml_free(value_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a sequence node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_sequence(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_sequence_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_item_t
+//        end *yaml_node_item_t
+//        top *yaml_node_item_t
+//    } items = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error
+//
+//    SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, items)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a mapping node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_mapping(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_mapping_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_pair_t
+//        end *yaml_node_pair_t
+//        top *yaml_node_pair_t
+//    } pairs = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error
+//
+//    MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, pairs)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Append an item to a sequence node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_sequence_item(document *yaml_document_t,
+//        sequence int, item int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(sequence > 0
+//            && document.nodes.start + sequence <= document.nodes.top)
+//                            // Valid sequence id is required.
+//    assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE)
+//                            // A sequence node is required.
+//    assert(item > 0 && document.nodes.start + item <= document.nodes.top)
+//                            // Valid item id is required.
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[sequence-1].data.sequence.items, item))
+//        return 0
+//
+//    return 1
+//}
+//
+///*
+// * Append a pair of a key and a value to a mapping node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_mapping_pair(document *yaml_document_t,
+//        mapping int, key int, value int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    pair yaml_node_pair_t
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(mapping > 0
+//            && document.nodes.start + mapping <= document.nodes.top)
+//                            // Valid mapping id is required.
+//    assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE)
+//                            // A mapping node is required.
+//    assert(key > 0 && document.nodes.start + key <= document.nodes.top)
+//                            // Valid key id is required.
+//    assert(value > 0 && document.nodes.start + value <= document.nodes.top)
+//                            // Valid value id is required.
+//
+//    pair.key = key
+//    pair.value = value
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[mapping-1].data.mapping.pairs, pair))
+//        return 0
+//
+//    return 1
+//}
+//
+//
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/decode.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/decode.go
new file mode 100644
index 00000000..e85eb2e3
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/decode.go
@@ -0,0 +1,685 @@
+package yaml
+
+import (
+	"encoding"
+	"encoding/base64"
+	"fmt"
+	"math"
+	"reflect"
+	"strconv"
+	"time"
+)
+
+const (
+	documentNode = 1 << iota
+	mappingNode
+	sequenceNode
+	scalarNode
+	aliasNode
+)
+
+type node struct {
+	kind         int
+	line, column int
+	tag          string
+	value        string
+	implicit     bool
+	children     []*node
+	anchors      map[string]*node
+}
+
+// ----------------------------------------------------------------------------
+// Parser, produces a node tree out of a libyaml event stream.
+
+type parser struct {
+	parser yaml_parser_t
+	event  yaml_event_t
+	doc    *node
+}
+
+func newParser(b []byte) *parser {
+	p := parser{}
+	if !yaml_parser_initialize(&p.parser) {
+		panic("failed to initialize YAML emitter")
+	}
+
+	if len(b) == 0 {
+		b = []byte{'\n'}
+	}
+
+	yaml_parser_set_input_string(&p.parser, b)
+
+	p.skip()
+	if p.event.typ != yaml_STREAM_START_EVENT {
+		panic("expected stream start event, got " + strconv.Itoa(int(p.event.typ)))
+	}
+	p.skip()
+	return &p
+}
+
+func (p *parser) destroy() {
+	if p.event.typ != yaml_NO_EVENT {
+		yaml_event_delete(&p.event)
+	}
+	yaml_parser_delete(&p.parser)
+}
+
+func (p *parser) skip() {
+	if p.event.typ != yaml_NO_EVENT {
+		if p.event.typ == yaml_STREAM_END_EVENT {
+			failf("attempted to go past the end of stream; corrupted value?")
+		}
+		yaml_event_delete(&p.event)
+	}
+	if !yaml_parser_parse(&p.parser, &p.event) {
+		p.fail()
+	}
+}
+
+func (p *parser) fail() {
+	var where string
+	var line int
+	if p.parser.problem_mark.line != 0 {
+		line = p.parser.problem_mark.line
+	} else if p.parser.context_mark.line != 0 {
+		line = p.parser.context_mark.line
+	}
+	if line != 0 {
+		where = "line " + strconv.Itoa(line) + ": "
+	}
+	var msg string
+	if len(p.parser.problem) > 0 {
+		msg = p.parser.problem
+	} else {
+		msg = "unknown problem parsing YAML content"
+	}
+	failf("%s%s", where, msg)
+}
+
+func (p *parser) anchor(n *node, anchor []byte) {
+	if anchor != nil {
+		p.doc.anchors[string(anchor)] = n
+	}
+}
+
+func (p *parser) parse() *node {
+	switch p.event.typ {
+	case yaml_SCALAR_EVENT:
+		return p.scalar()
+	case yaml_ALIAS_EVENT:
+		return p.alias()
+	case yaml_MAPPING_START_EVENT:
+		return p.mapping()
+	case yaml_SEQUENCE_START_EVENT:
+		return p.sequence()
+	case yaml_DOCUMENT_START_EVENT:
+		return p.document()
+	case yaml_STREAM_END_EVENT:
+		// Happens when attempting to decode an empty buffer.
+		return nil
+	default:
+		panic("attempted to parse unknown event: " + strconv.Itoa(int(p.event.typ)))
+	}
+}
+
+func (p *parser) node(kind int) *node {
+	return &node{
+		kind:   kind,
+		line:   p.event.start_mark.line,
+		column: p.event.start_mark.column,
+	}
+}
+
+func (p *parser) document() *node {
+	n := p.node(documentNode)
+	n.anchors = make(map[string]*node)
+	p.doc = n
+	p.skip()
+	n.children = append(n.children, p.parse())
+	if p.event.typ != yaml_DOCUMENT_END_EVENT {
+		panic("expected end of document event but got " + strconv.Itoa(int(p.event.typ)))
+	}
+	p.skip()
+	return n
+}
+
+func (p *parser) alias() *node {
+	n := p.node(aliasNode)
+	n.value = string(p.event.anchor)
+	p.skip()
+	return n
+}
+
+func (p *parser) scalar() *node {
+	n := p.node(scalarNode)
+	n.value = string(p.event.value)
+	n.tag = string(p.event.tag)
+	n.implicit = p.event.implicit
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	return n
+}
+
+func (p *parser) sequence() *node {
+	n := p.node(sequenceNode)
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	for p.event.typ != yaml_SEQUENCE_END_EVENT {
+		n.children = append(n.children, p.parse())
+	}
+	p.skip()
+	return n
+}
+
+func (p *parser) mapping() *node {
+	n := p.node(mappingNode)
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	for p.event.typ != yaml_MAPPING_END_EVENT {
+		n.children = append(n.children, p.parse(), p.parse())
+	}
+	p.skip()
+	return n
+}
+
+// ----------------------------------------------------------------------------
+// Decoder, unmarshals a node into a provided value.
+
+type decoder struct {
+	doc     *node
+	aliases map[string]bool
+	mapType reflect.Type
+	terrors []string
+	strict  bool
+}
+
+var (
+	mapItemType    = reflect.TypeOf(MapItem{})
+	durationType   = reflect.TypeOf(time.Duration(0))
+	defaultMapType = reflect.TypeOf(map[interface{}]interface{}{})
+	ifaceType      = defaultMapType.Elem()
+)
+
+func newDecoder(strict bool) *decoder {
+	d := &decoder{mapType: defaultMapType, strict: strict}
+	d.aliases = make(map[string]bool)
+	return d
+}
+
+func (d *decoder) terror(n *node, tag string, out reflect.Value) {
+	if n.tag != "" {
+		tag = n.tag
+	}
+	value := n.value
+	if tag != yaml_SEQ_TAG && tag != yaml_MAP_TAG {
+		if len(value) > 10 {
+			value = " `" + value[:7] + "...`"
+		} else {
+			value = " `" + value + "`"
+		}
+	}
+	d.terrors = append(d.terrors, fmt.Sprintf("line %d: cannot unmarshal %s%s into %s", n.line+1, shortTag(tag), value, out.Type()))
+}
+
+func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) {
+	terrlen := len(d.terrors)
+	err := u.UnmarshalYAML(func(v interface{}) (err error) {
+		defer handleErr(&err)
+		d.unmarshal(n, reflect.ValueOf(v))
+		if len(d.terrors) > terrlen {
+			issues := d.terrors[terrlen:]
+			d.terrors = d.terrors[:terrlen]
+			return &TypeError{issues}
+		}
+		return nil
+	})
+	if e, ok := err.(*TypeError); ok {
+		d.terrors = append(d.terrors, e.Errors...)
+		return false
+	}
+	if err != nil {
+		fail(err)
+	}
+	return true
+}
+
+// d.prepare initializes and dereferences pointers and calls UnmarshalYAML
+// if a value is found to implement it.
+// It returns the initialized and dereferenced out value, whether
+// unmarshalling was already done by UnmarshalYAML, and if so whether
+// its types unmarshalled appropriately.
+//
+// If n holds a null value, prepare returns before doing anything.
+func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) {
+	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "~" || n.value == "" && n.implicit) {
+		return out, false, false
+	}
+	again := true
+	for again {
+		again = false
+		if out.Kind() == reflect.Ptr {
+			if out.IsNil() {
+				out.Set(reflect.New(out.Type().Elem()))
+			}
+			out = out.Elem()
+			again = true
+		}
+		if out.CanAddr() {
+			if u, ok := out.Addr().Interface().(Unmarshaler); ok {
+				good = d.callUnmarshaler(n, u)
+				return out, true, good
+			}
+		}
+	}
+	return out, false, false
+}
+
+func (d *decoder) unmarshal(n *node, out reflect.Value) (good bool) {
+	switch n.kind {
+	case documentNode:
+		return d.document(n, out)
+	case aliasNode:
+		return d.alias(n, out)
+	}
+	out, unmarshaled, good := d.prepare(n, out)
+	if unmarshaled {
+		return good
+	}
+	switch n.kind {
+	case scalarNode:
+		good = d.scalar(n, out)
+	case mappingNode:
+		good = d.mapping(n, out)
+	case sequenceNode:
+		good = d.sequence(n, out)
+	default:
+		panic("internal error: unknown node kind: " + strconv.Itoa(n.kind))
+	}
+	return good
+}
+
+func (d *decoder) document(n *node, out reflect.Value) (good bool) {
+	if len(n.children) == 1 {
+		d.doc = n
+		d.unmarshal(n.children[0], out)
+		return true
+	}
+	return false
+}
+
+func (d *decoder) alias(n *node, out reflect.Value) (good bool) {
+	an, ok := d.doc.anchors[n.value]
+	if !ok {
+		failf("unknown anchor '%s' referenced", n.value)
+	}
+	if d.aliases[n.value] {
+		failf("anchor '%s' value contains itself", n.value)
+	}
+	d.aliases[n.value] = true
+	good = d.unmarshal(an, out)
+	delete(d.aliases, n.value)
+	return good
+}
+
+var zeroValue reflect.Value
+
+func resetMap(out reflect.Value) {
+	for _, k := range out.MapKeys() {
+		out.SetMapIndex(k, zeroValue)
+	}
+}
+
+func (d *decoder) scalar(n *node, out reflect.Value) (good bool) {
+	var tag string
+	var resolved interface{}
+	if n.tag == "" && !n.implicit {
+		tag = yaml_STR_TAG
+		resolved = n.value
+	} else {
+		tag, resolved = resolve(n.tag, n.value)
+		if tag == yaml_BINARY_TAG {
+			data, err := base64.StdEncoding.DecodeString(resolved.(string))
+			if err != nil {
+				failf("!!binary value contains invalid base64 data")
+			}
+			resolved = string(data)
+		}
+	}
+	if resolved == nil {
+		if out.Kind() == reflect.Map && !out.CanAddr() {
+			resetMap(out)
+		} else {
+			out.Set(reflect.Zero(out.Type()))
+		}
+		return true
+	}
+	if s, ok := resolved.(string); ok && out.CanAddr() {
+		if u, ok := out.Addr().Interface().(encoding.TextUnmarshaler); ok {
+			err := u.UnmarshalText([]byte(s))
+			if err != nil {
+				fail(err)
+			}
+			return true
+		}
+	}
+	switch out.Kind() {
+	case reflect.String:
+		if tag == yaml_BINARY_TAG {
+			out.SetString(resolved.(string))
+			good = true
+		} else if resolved != nil {
+			out.SetString(n.value)
+			good = true
+		}
+	case reflect.Interface:
+		if resolved == nil {
+			out.Set(reflect.Zero(out.Type()))
+		} else {
+			out.Set(reflect.ValueOf(resolved))
+		}
+		good = true
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		switch resolved := resolved.(type) {
+		case int:
+			if !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case int64:
+			if !out.OverflowInt(resolved) {
+				out.SetInt(resolved)
+				good = true
+			}
+		case uint64:
+			if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case float64:
+			if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case string:
+			if out.Type() == durationType {
+				d, err := time.ParseDuration(resolved)
+				if err == nil {
+					out.SetInt(int64(d))
+					good = true
+				}
+			}
+		}
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		switch resolved := resolved.(type) {
+		case int:
+			if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case int64:
+			if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case uint64:
+			if !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case float64:
+			if resolved <= math.MaxUint64 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		}
+	case reflect.Bool:
+		switch resolved := resolved.(type) {
+		case bool:
+			out.SetBool(resolved)
+			good = true
+		}
+	case reflect.Float32, reflect.Float64:
+		switch resolved := resolved.(type) {
+		case int:
+			out.SetFloat(float64(resolved))
+			good = true
+		case int64:
+			out.SetFloat(float64(resolved))
+			good = true
+		case uint64:
+			out.SetFloat(float64(resolved))
+			good = true
+		case float64:
+			out.SetFloat(resolved)
+			good = true
+		}
+	case reflect.Ptr:
+		if out.Type().Elem() == reflect.TypeOf(resolved) {
+			// TODO DOes this make sense? When is out a Ptr except when decoding a nil value?
+			elem := reflect.New(out.Type().Elem())
+			elem.Elem().Set(reflect.ValueOf(resolved))
+			out.Set(elem)
+			good = true
+		}
+	}
+	if !good {
+		d.terror(n, tag, out)
+	}
+	return good
+}
+
+func settableValueOf(i interface{}) reflect.Value {
+	v := reflect.ValueOf(i)
+	sv := reflect.New(v.Type()).Elem()
+	sv.Set(v)
+	return sv
+}
+
+func (d *decoder) sequence(n *node, out reflect.Value) (good bool) {
+	l := len(n.children)
+
+	var iface reflect.Value
+	switch out.Kind() {
+	case reflect.Slice:
+		out.Set(reflect.MakeSlice(out.Type(), l, l))
+	case reflect.Interface:
+		// No type hints. Will have to use a generic sequence.
+		iface = out
+		out = settableValueOf(make([]interface{}, l))
+	default:
+		d.terror(n, yaml_SEQ_TAG, out)
+		return false
+	}
+	et := out.Type().Elem()
+
+	j := 0
+	for i := 0; i < l; i++ {
+		e := reflect.New(et).Elem()
+		if ok := d.unmarshal(n.children[i], e); ok {
+			out.Index(j).Set(e)
+			j++
+		}
+	}
+	out.Set(out.Slice(0, j))
+	if iface.IsValid() {
+		iface.Set(out)
+	}
+	return true
+}
+
+func (d *decoder) mapping(n *node, out reflect.Value) (good bool) {
+	switch out.Kind() {
+	case reflect.Struct:
+		return d.mappingStruct(n, out)
+	case reflect.Slice:
+		return d.mappingSlice(n, out)
+	case reflect.Map:
+		// okay
+	case reflect.Interface:
+		if d.mapType.Kind() == reflect.Map {
+			iface := out
+			out = reflect.MakeMap(d.mapType)
+			iface.Set(out)
+		} else {
+			slicev := reflect.New(d.mapType).Elem()
+			if !d.mappingSlice(n, slicev) {
+				return false
+			}
+			out.Set(slicev)
+			return true
+		}
+	default:
+		d.terror(n, yaml_MAP_TAG, out)
+		return false
+	}
+	outt := out.Type()
+	kt := outt.Key()
+	et := outt.Elem()
+
+	mapType := d.mapType
+	if outt.Key() == ifaceType && outt.Elem() == ifaceType {
+		d.mapType = outt
+	}
+
+	if out.IsNil() {
+		out.Set(reflect.MakeMap(outt))
+	}
+	l := len(n.children)
+	for i := 0; i < l; i += 2 {
+		if isMerge(n.children[i]) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		k := reflect.New(kt).Elem()
+		if d.unmarshal(n.children[i], k) {
+			kkind := k.Kind()
+			if kkind == reflect.Interface {
+				kkind = k.Elem().Kind()
+			}
+			if kkind == reflect.Map || kkind == reflect.Slice {
+				failf("invalid map key: %#v", k.Interface())
+			}
+			e := reflect.New(et).Elem()
+			if d.unmarshal(n.children[i+1], e) {
+				out.SetMapIndex(k, e)
+			}
+		}
+	}
+	d.mapType = mapType
+	return true
+}
+
+func (d *decoder) mappingSlice(n *node, out reflect.Value) (good bool) {
+	outt := out.Type()
+	if outt.Elem() != mapItemType {
+		d.terror(n, yaml_MAP_TAG, out)
+		return false
+	}
+
+	mapType := d.mapType
+	d.mapType = outt
+
+	var slice []MapItem
+	var l = len(n.children)
+	for i := 0; i < l; i += 2 {
+		if isMerge(n.children[i]) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		item := MapItem{}
+		k := reflect.ValueOf(&item.Key).Elem()
+		if d.unmarshal(n.children[i], k) {
+			v := reflect.ValueOf(&item.Value).Elem()
+			if d.unmarshal(n.children[i+1], v) {
+				slice = append(slice, item)
+			}
+		}
+	}
+	out.Set(reflect.ValueOf(slice))
+	d.mapType = mapType
+	return true
+}
+
+func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) {
+	sinfo, err := getStructInfo(out.Type())
+	if err != nil {
+		panic(err)
+	}
+	name := settableValueOf("")
+	l := len(n.children)
+
+	var inlineMap reflect.Value
+	var elemType reflect.Type
+	if sinfo.InlineMap != -1 {
+		inlineMap = out.Field(sinfo.InlineMap)
+		inlineMap.Set(reflect.New(inlineMap.Type()).Elem())
+		elemType = inlineMap.Type().Elem()
+	}
+
+	for i := 0; i < l; i += 2 {
+		ni := n.children[i]
+		if isMerge(ni) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		if !d.unmarshal(ni, name) {
+			continue
+		}
+		if info, ok := sinfo.FieldsMap[name.String()]; ok {
+			var field reflect.Value
+			if info.Inline == nil {
+				field = out.Field(info.Num)
+			} else {
+				field = out.FieldByIndex(info.Inline)
+			}
+			d.unmarshal(n.children[i+1], field)
+		} else if sinfo.InlineMap != -1 {
+			if inlineMap.IsNil() {
+				inlineMap.Set(reflect.MakeMap(inlineMap.Type()))
+			}
+			value := reflect.New(elemType).Elem()
+			d.unmarshal(n.children[i+1], value)
+			inlineMap.SetMapIndex(name, value)
+		} else if d.strict {
+			d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in struct %s", ni.line+1, name.String(), out.Type()))
+		}
+	}
+	return true
+}
+
+func failWantMap() {
+	failf("map merge requires map or sequence of maps as the value")
+}
+
+func (d *decoder) merge(n *node, out reflect.Value) {
+	switch n.kind {
+	case mappingNode:
+		d.unmarshal(n, out)
+	case aliasNode:
+		an, ok := d.doc.anchors[n.value]
+		if ok && an.kind != mappingNode {
+			failWantMap()
+		}
+		d.unmarshal(n, out)
+	case sequenceNode:
+		// Step backwards as earlier nodes take precedence.
+		for i := len(n.children) - 1; i >= 0; i-- {
+			ni := n.children[i]
+			if ni.kind == aliasNode {
+				an, ok := d.doc.anchors[ni.value]
+				if ok && an.kind != mappingNode {
+					failWantMap()
+				}
+			} else if ni.kind != mappingNode {
+				failWantMap()
+			}
+			d.unmarshal(ni, out)
+		}
+	default:
+		failWantMap()
+	}
+}
+
+func isMerge(n *node) bool {
+	return n.kind == scalarNode && n.value == "<<" && (n.implicit == true || n.tag == yaml_MERGE_TAG)
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/emitterc.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/emitterc.go
new file mode 100644
index 00000000..dcaf502f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/emitterc.go
@@ -0,0 +1,1684 @@
+package yaml
+
+import (
+	"bytes"
+)
+
+// Flush the buffer if needed.
+func flush(emitter *yaml_emitter_t) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) {
+		return yaml_emitter_flush(emitter)
+	}
+	return true
+}
+
+// Put a character to the output buffer.
+func put(emitter *yaml_emitter_t, value byte) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	emitter.buffer[emitter.buffer_pos] = value
+	emitter.buffer_pos++
+	emitter.column++
+	return true
+}
+
+// Put a line break to the output buffer.
+func put_break(emitter *yaml_emitter_t) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	switch emitter.line_break {
+	case yaml_CR_BREAK:
+		emitter.buffer[emitter.buffer_pos] = '\r'
+		emitter.buffer_pos += 1
+	case yaml_LN_BREAK:
+		emitter.buffer[emitter.buffer_pos] = '\n'
+		emitter.buffer_pos += 1
+	case yaml_CRLN_BREAK:
+		emitter.buffer[emitter.buffer_pos+0] = '\r'
+		emitter.buffer[emitter.buffer_pos+1] = '\n'
+		emitter.buffer_pos += 2
+	default:
+		panic("unknown line break setting")
+	}
+	emitter.column = 0
+	emitter.line++
+	return true
+}
+
+// Copy a character from a string into buffer.
+func write(emitter *yaml_emitter_t, s []byte, i *int) bool {
+	if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
+		return false
+	}
+	p := emitter.buffer_pos
+	w := width(s[*i])
+	switch w {
+	case 4:
+		emitter.buffer[p+3] = s[*i+3]
+		fallthrough
+	case 3:
+		emitter.buffer[p+2] = s[*i+2]
+		fallthrough
+	case 2:
+		emitter.buffer[p+1] = s[*i+1]
+		fallthrough
+	case 1:
+		emitter.buffer[p+0] = s[*i+0]
+	default:
+		panic("unknown character width")
+	}
+	emitter.column++
+	emitter.buffer_pos += w
+	*i += w
+	return true
+}
+
+// Write a whole string into buffer.
+func write_all(emitter *yaml_emitter_t, s []byte) bool {
+	for i := 0; i < len(s); {
+		if !write(emitter, s, &i) {
+			return false
+		}
+	}
+	return true
+}
+
+// Copy a line break character from a string into buffer.
+func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool {
+	if s[*i] == '\n' {
+		if !put_break(emitter) {
+			return false
+		}
+		*i++
+	} else {
+		if !write(emitter, s, i) {
+			return false
+		}
+		emitter.column = 0
+		emitter.line++
+	}
+	return true
+}
+
+// Set an emitter error and return false.
+func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool {
+	emitter.error = yaml_EMITTER_ERROR
+	emitter.problem = problem
+	return false
+}
+
+// Emit an event.
+func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	emitter.events = append(emitter.events, *event)
+	for !yaml_emitter_need_more_events(emitter) {
+		event := &emitter.events[emitter.events_head]
+		if !yaml_emitter_analyze_event(emitter, event) {
+			return false
+		}
+		if !yaml_emitter_state_machine(emitter, event) {
+			return false
+		}
+		yaml_event_delete(event)
+		emitter.events_head++
+	}
+	return true
+}
+
+// Check if we need to accumulate more events before emitting.
+//
+// We accumulate extra
+//  - 1 event for DOCUMENT-START
+//  - 2 events for SEQUENCE-START
+//  - 3 events for MAPPING-START
+//
+func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool {
+	if emitter.events_head == len(emitter.events) {
+		return true
+	}
+	var accumulate int
+	switch emitter.events[emitter.events_head].typ {
+	case yaml_DOCUMENT_START_EVENT:
+		accumulate = 1
+		break
+	case yaml_SEQUENCE_START_EVENT:
+		accumulate = 2
+		break
+	case yaml_MAPPING_START_EVENT:
+		accumulate = 3
+		break
+	default:
+		return false
+	}
+	if len(emitter.events)-emitter.events_head > accumulate {
+		return false
+	}
+	var level int
+	for i := emitter.events_head; i < len(emitter.events); i++ {
+		switch emitter.events[i].typ {
+		case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT:
+			level++
+		case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT:
+			level--
+		}
+		if level == 0 {
+			return false
+		}
+	}
+	return true
+}
+
+// Append a directive to the directives stack.
+func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool {
+	for i := 0; i < len(emitter.tag_directives); i++ {
+		if bytes.Equal(value.handle, emitter.tag_directives[i].handle) {
+			if allow_duplicates {
+				return true
+			}
+			return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive")
+		}
+	}
+
+	// [Go] Do we actually need to copy this given garbage collection
+	// and the lack of deallocating destructors?
+	tag_copy := yaml_tag_directive_t{
+		handle: make([]byte, len(value.handle)),
+		prefix: make([]byte, len(value.prefix)),
+	}
+	copy(tag_copy.handle, value.handle)
+	copy(tag_copy.prefix, value.prefix)
+	emitter.tag_directives = append(emitter.tag_directives, tag_copy)
+	return true
+}
+
+// Increase the indentation level.
+func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool {
+	emitter.indents = append(emitter.indents, emitter.indent)
+	if emitter.indent < 0 {
+		if flow {
+			emitter.indent = emitter.best_indent
+		} else {
+			emitter.indent = 0
+		}
+	} else if !indentless {
+		emitter.indent += emitter.best_indent
+	}
+	return true
+}
+
+// State dispatcher.
+func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	switch emitter.state {
+	default:
+	case yaml_EMIT_STREAM_START_STATE:
+		return yaml_emitter_emit_stream_start(emitter, event)
+
+	case yaml_EMIT_FIRST_DOCUMENT_START_STATE:
+		return yaml_emitter_emit_document_start(emitter, event, true)
+
+	case yaml_EMIT_DOCUMENT_START_STATE:
+		return yaml_emitter_emit_document_start(emitter, event, false)
+
+	case yaml_EMIT_DOCUMENT_CONTENT_STATE:
+		return yaml_emitter_emit_document_content(emitter, event)
+
+	case yaml_EMIT_DOCUMENT_END_STATE:
+		return yaml_emitter_emit_document_end(emitter, event)
+
+	case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
+		return yaml_emitter_emit_flow_sequence_item(emitter, event, true)
+
+	case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE:
+		return yaml_emitter_emit_flow_sequence_item(emitter, event, false)
+
+	case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
+		return yaml_emitter_emit_flow_mapping_key(emitter, event, true)
+
+	case yaml_EMIT_FLOW_MAPPING_KEY_STATE:
+		return yaml_emitter_emit_flow_mapping_key(emitter, event, false)
+
+	case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
+		return yaml_emitter_emit_flow_mapping_value(emitter, event, true)
+
+	case yaml_EMIT_FLOW_MAPPING_VALUE_STATE:
+		return yaml_emitter_emit_flow_mapping_value(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
+		return yaml_emitter_emit_block_sequence_item(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
+		return yaml_emitter_emit_block_sequence_item(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return yaml_emitter_emit_block_mapping_key(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_MAPPING_KEY_STATE:
+		return yaml_emitter_emit_block_mapping_key(emitter, event, false)
+
+	case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
+		return yaml_emitter_emit_block_mapping_value(emitter, event, true)
+
+	case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE:
+		return yaml_emitter_emit_block_mapping_value(emitter, event, false)
+
+	case yaml_EMIT_END_STATE:
+		return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END")
+	}
+	panic("invalid emitter state")
+}
+
+// Expect STREAM-START.
+func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if event.typ != yaml_STREAM_START_EVENT {
+		return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START")
+	}
+	if emitter.encoding == yaml_ANY_ENCODING {
+		emitter.encoding = event.encoding
+		if emitter.encoding == yaml_ANY_ENCODING {
+			emitter.encoding = yaml_UTF8_ENCODING
+		}
+	}
+	if emitter.best_indent < 2 || emitter.best_indent > 9 {
+		emitter.best_indent = 2
+	}
+	if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 {
+		emitter.best_width = 80
+	}
+	if emitter.best_width < 0 {
+		emitter.best_width = 1<<31 - 1
+	}
+	if emitter.line_break == yaml_ANY_BREAK {
+		emitter.line_break = yaml_LN_BREAK
+	}
+
+	emitter.indent = -1
+	emitter.line = 0
+	emitter.column = 0
+	emitter.whitespace = true
+	emitter.indention = true
+
+	if emitter.encoding != yaml_UTF8_ENCODING {
+		if !yaml_emitter_write_bom(emitter) {
+			return false
+		}
+	}
+	emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE
+	return true
+}
+
+// Expect DOCUMENT-START or STREAM-END.
+func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+
+	if event.typ == yaml_DOCUMENT_START_EVENT {
+
+		if event.version_directive != nil {
+			if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
+				return false
+			}
+		}
+
+		for i := 0; i < len(event.tag_directives); i++ {
+			tag_directive := &event.tag_directives[i]
+			if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
+				return false
+			}
+			if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
+				return false
+			}
+		}
+
+		for i := 0; i < len(default_tag_directives); i++ {
+			tag_directive := &default_tag_directives[i]
+			if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
+				return false
+			}
+		}
+
+		implicit := event.implicit
+		if !first || emitter.canonical {
+			implicit = false
+		}
+
+		if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
+			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+
+		if event.version_directive != nil {
+			implicit = false
+			if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+
+		if len(event.tag_directives) > 0 {
+			implicit = false
+			for i := 0; i < len(event.tag_directives); i++ {
+				tag_directive := &event.tag_directives[i]
+				if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
+					return false
+				}
+				if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
+					return false
+				}
+				if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
+					return false
+				}
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+		}
+
+		if yaml_emitter_check_empty_document(emitter) {
+			implicit = false
+		}
+		if !implicit {
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+			if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
+				return false
+			}
+			if emitter.canonical {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+		}
+
+		emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
+		return true
+	}
+
+	if event.typ == yaml_STREAM_END_EVENT {
+		if emitter.open_ended {
+			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_flush(emitter) {
+			return false
+		}
+		emitter.state = yaml_EMIT_END_STATE
+		return true
+	}
+
+	return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
+}
+
+// Expect the root node.
+func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE)
+	return yaml_emitter_emit_node(emitter, event, true, false, false, false)
+}
+
+// Expect DOCUMENT-END.
+func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if event.typ != yaml_DOCUMENT_END_EVENT {
+		return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END")
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if !event.implicit {
+		// [Go] Allocate the slice elsewhere.
+		if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
+			return false
+		}
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+	if !yaml_emitter_flush(emitter) {
+		return false
+	}
+	emitter.state = yaml_EMIT_DOCUMENT_START_STATE
+	emitter.tag_directives = emitter.tag_directives[:0]
+	return true
+}
+
+// Expect a flow item node.
+func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) {
+			return false
+		}
+		if !yaml_emitter_increase_indent(emitter, true, false) {
+			return false
+		}
+		emitter.flow_level++
+	}
+
+	if event.typ == yaml_SEQUENCE_END_EVENT {
+		emitter.flow_level--
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		if emitter.canonical && !first {
+			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) {
+			return false
+		}
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+
+		return true
+	}
+
+	if !first {
+		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+			return false
+		}
+	}
+
+	if emitter.canonical || emitter.column > emitter.best_width {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a flow key node.
+func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) {
+			return false
+		}
+		if !yaml_emitter_increase_indent(emitter, true, false) {
+			return false
+		}
+		emitter.flow_level++
+	}
+
+	if event.typ == yaml_MAPPING_END_EVENT {
+		emitter.flow_level--
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		if emitter.canonical && !first {
+			if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+				return false
+			}
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) {
+			return false
+		}
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+
+	if !first {
+		if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
+			return false
+		}
+	}
+	if emitter.canonical || emitter.column > emitter.best_width {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+	}
+
+	if !emitter.canonical && yaml_emitter_check_simple_key(emitter) {
+		emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)
+		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a flow value node.
+func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+	if simple {
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+			return false
+		}
+	} else {
+		if emitter.canonical || emitter.column > emitter.best_width {
+			if !yaml_emitter_write_indent(emitter) {
+				return false
+			}
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block item node.
+func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_increase_indent(emitter, false, emitter.mapping_context && !emitter.indention) {
+			return false
+		}
+	}
+	if event.typ == yaml_SEQUENCE_END_EVENT {
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, true, false, false)
+}
+
+// Expect a block key node.
+func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
+	if first {
+		if !yaml_emitter_increase_indent(emitter, false, false) {
+			return false
+		}
+	}
+	if event.typ == yaml_MAPPING_END_EVENT {
+		emitter.indent = emitter.indents[len(emitter.indents)-1]
+		emitter.indents = emitter.indents[:len(emitter.indents)-1]
+		emitter.state = emitter.states[len(emitter.states)-1]
+		emitter.states = emitter.states[:len(emitter.states)-1]
+		return true
+	}
+	if !yaml_emitter_write_indent(emitter) {
+		return false
+	}
+	if yaml_emitter_check_simple_key(emitter) {
+		emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)
+		return yaml_emitter_emit_node(emitter, event, false, false, true, true)
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) {
+		return false
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a block value node.
+func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
+	if simple {
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
+			return false
+		}
+	} else {
+		if !yaml_emitter_write_indent(emitter) {
+			return false
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) {
+			return false
+		}
+	}
+	emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE)
+	return yaml_emitter_emit_node(emitter, event, false, false, true, false)
+}
+
+// Expect a node.
+func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
+	root bool, sequence bool, mapping bool, simple_key bool) bool {
+
+	emitter.root_context = root
+	emitter.sequence_context = sequence
+	emitter.mapping_context = mapping
+	emitter.simple_key_context = simple_key
+
+	switch event.typ {
+	case yaml_ALIAS_EVENT:
+		return yaml_emitter_emit_alias(emitter, event)
+	case yaml_SCALAR_EVENT:
+		return yaml_emitter_emit_scalar(emitter, event)
+	case yaml_SEQUENCE_START_EVENT:
+		return yaml_emitter_emit_sequence_start(emitter, event)
+	case yaml_MAPPING_START_EVENT:
+		return yaml_emitter_emit_mapping_start(emitter, event)
+	default:
+		return yaml_emitter_set_emitter_error(emitter,
+			"expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS")
+	}
+}
+
+// Expect ALIAS.
+func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	emitter.state = emitter.states[len(emitter.states)-1]
+	emitter.states = emitter.states[:len(emitter.states)-1]
+	return true
+}
+
+// Expect SCALAR.
+func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_select_scalar_style(emitter, event) {
+		return false
+	}
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if !yaml_emitter_increase_indent(emitter, true, false) {
+		return false
+	}
+	if !yaml_emitter_process_scalar(emitter) {
+		return false
+	}
+	emitter.indent = emitter.indents[len(emitter.indents)-1]
+	emitter.indents = emitter.indents[:len(emitter.indents)-1]
+	emitter.state = emitter.states[len(emitter.states)-1]
+	emitter.states = emitter.states[:len(emitter.states)-1]
+	return true
+}
+
+// Expect SEQUENCE-START.
+func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE ||
+		yaml_emitter_check_empty_sequence(emitter) {
+		emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE
+	} else {
+		emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE
+	}
+	return true
+}
+
+// Expect MAPPING-START.
+func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+	if !yaml_emitter_process_anchor(emitter) {
+		return false
+	}
+	if !yaml_emitter_process_tag(emitter) {
+		return false
+	}
+	if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE ||
+		yaml_emitter_check_empty_mapping(emitter) {
+		emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE
+	} else {
+		emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE
+	}
+	return true
+}
+
+// Check if the document content is an empty scalar.
+func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool {
+	return false // [Go] Huh?
+}
+
+// Check if the next events represent an empty sequence.
+func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool {
+	if len(emitter.events)-emitter.events_head < 2 {
+		return false
+	}
+	return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT &&
+		emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT
+}
+
+// Check if the next events represent an empty mapping.
+func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool {
+	if len(emitter.events)-emitter.events_head < 2 {
+		return false
+	}
+	return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT &&
+		emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT
+}
+
+// Check if the next node can be expressed as a simple key.
+func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool {
+	length := 0
+	switch emitter.events[emitter.events_head].typ {
+	case yaml_ALIAS_EVENT:
+		length += len(emitter.anchor_data.anchor)
+	case yaml_SCALAR_EVENT:
+		if emitter.scalar_data.multiline {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix) +
+			len(emitter.scalar_data.value)
+	case yaml_SEQUENCE_START_EVENT:
+		if !yaml_emitter_check_empty_sequence(emitter) {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix)
+	case yaml_MAPPING_START_EVENT:
+		if !yaml_emitter_check_empty_mapping(emitter) {
+			return false
+		}
+		length += len(emitter.anchor_data.anchor) +
+			len(emitter.tag_data.handle) +
+			len(emitter.tag_data.suffix)
+	default:
+		return false
+	}
+	return length <= 128
+}
+
+// Determine an acceptable scalar style.
+func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+	no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
+	if no_tag && !event.implicit && !event.quoted_implicit {
+		return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
+	}
+
+	style := event.scalar_style()
+	if style == yaml_ANY_SCALAR_STYLE {
+		style = yaml_PLAIN_SCALAR_STYLE
+	}
+	if emitter.canonical {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+	if emitter.simple_key_context && emitter.scalar_data.multiline {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+
+	if style == yaml_PLAIN_SCALAR_STYLE {
+		if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed ||
+			emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+		if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+		if no_tag && !event.implicit {
+			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
+		}
+	}
+	if style == yaml_SINGLE_QUOTED_SCALAR_STYLE {
+		if !emitter.scalar_data.single_quoted_allowed {
+			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+		}
+	}
+	if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE {
+		if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context {
+			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+		}
+	}
+
+	if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
+		emitter.tag_data.handle = []byte{'!'}
+	}
+	emitter.scalar_data.style = style
+	return true
+}
+
+// Write an achor.
+func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool {
+	if emitter.anchor_data.anchor == nil {
+		return true
+	}
+	c := []byte{'&'}
+	if emitter.anchor_data.alias {
+		c[0] = '*'
+	}
+	if !yaml_emitter_write_indicator(emitter, c, true, false, false) {
+		return false
+	}
+	return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor)
+}
+
+// Write a tag.
+func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool {
+	if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 {
+		return true
+	}
+	if len(emitter.tag_data.handle) > 0 {
+		if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) {
+			return false
+		}
+		if len(emitter.tag_data.suffix) > 0 {
+			if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+				return false
+			}
+		}
+	} else {
+		// [Go] Allocate these slices elsewhere.
+		if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) {
+			return false
+		}
+		if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
+			return false
+		}
+		if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) {
+			return false
+		}
+	}
+	return true
+}
+
+// Write a scalar.
+func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool {
+	switch emitter.scalar_data.style {
+	case yaml_PLAIN_SCALAR_STYLE:
+		return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_SINGLE_QUOTED_SCALAR_STYLE:
+		return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_DOUBLE_QUOTED_SCALAR_STYLE:
+		return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
+
+	case yaml_LITERAL_SCALAR_STYLE:
+		return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value)
+
+	case yaml_FOLDED_SCALAR_STYLE:
+		return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value)
+	}
+	panic("unknown scalar style")
+}
+
+// Check if a %YAML directive is valid.
+func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool {
+	if version_directive.major != 1 || version_directive.minor != 1 {
+		return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive")
+	}
+	return true
+}
+
+// Check if a %TAG directive is valid.
+func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool {
+	handle := tag_directive.handle
+	prefix := tag_directive.prefix
+	if len(handle) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty")
+	}
+	if handle[0] != '!' {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'")
+	}
+	if handle[len(handle)-1] != '!' {
+		return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'")
+	}
+	for i := 1; i < len(handle)-1; i += width(handle[i]) {
+		if !is_alpha(handle, i) {
+			return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only")
+		}
+	}
+	if len(prefix) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty")
+	}
+	return true
+}
+
+// Check if an anchor is valid.
+func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool {
+	if len(anchor) == 0 {
+		problem := "anchor value must not be empty"
+		if alias {
+			problem = "alias value must not be empty"
+		}
+		return yaml_emitter_set_emitter_error(emitter, problem)
+	}
+	for i := 0; i < len(anchor); i += width(anchor[i]) {
+		if !is_alpha(anchor, i) {
+			problem := "anchor value must contain alphanumerical characters only"
+			if alias {
+				problem = "alias value must contain alphanumerical characters only"
+			}
+			return yaml_emitter_set_emitter_error(emitter, problem)
+		}
+	}
+	emitter.anchor_data.anchor = anchor
+	emitter.anchor_data.alias = alias
+	return true
+}
+
+// Check if a tag is valid.
+func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool {
+	if len(tag) == 0 {
+		return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty")
+	}
+	for i := 0; i < len(emitter.tag_directives); i++ {
+		tag_directive := &emitter.tag_directives[i]
+		if bytes.HasPrefix(tag, tag_directive.prefix) {
+			emitter.tag_data.handle = tag_directive.handle
+			emitter.tag_data.suffix = tag[len(tag_directive.prefix):]
+			return true
+		}
+	}
+	emitter.tag_data.suffix = tag
+	return true
+}
+
+// Check if a scalar is valid.
+func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	var (
+		block_indicators   = false
+		flow_indicators    = false
+		line_breaks        = false
+		special_characters = false
+
+		leading_space  = false
+		leading_break  = false
+		trailing_space = false
+		trailing_break = false
+		break_space    = false
+		space_break    = false
+
+		preceded_by_whitespace = false
+		followed_by_whitespace = false
+		previous_space         = false
+		previous_break         = false
+	)
+
+	emitter.scalar_data.value = value
+
+	if len(value) == 0 {
+		emitter.scalar_data.multiline = false
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = true
+		emitter.scalar_data.single_quoted_allowed = true
+		emitter.scalar_data.block_allowed = false
+		return true
+	}
+
+	if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) {
+		block_indicators = true
+		flow_indicators = true
+	}
+
+	preceded_by_whitespace = true
+	for i, w := 0, 0; i < len(value); i += w {
+		w = width(value[i])
+		followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
+
+		if i == 0 {
+			switch value[i] {
+			case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`':
+				flow_indicators = true
+				block_indicators = true
+			case '?', ':':
+				flow_indicators = true
+				if followed_by_whitespace {
+					block_indicators = true
+				}
+			case '-':
+				if followed_by_whitespace {
+					flow_indicators = true
+					block_indicators = true
+				}
+			}
+		} else {
+			switch value[i] {
+			case ',', '?', '[', ']', '{', '}':
+				flow_indicators = true
+			case ':':
+				flow_indicators = true
+				if followed_by_whitespace {
+					block_indicators = true
+				}
+			case '#':
+				if preceded_by_whitespace {
+					flow_indicators = true
+					block_indicators = true
+				}
+			}
+		}
+
+		if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode {
+			special_characters = true
+		}
+		if is_space(value, i) {
+			if i == 0 {
+				leading_space = true
+			}
+			if i+width(value[i]) == len(value) {
+				trailing_space = true
+			}
+			if previous_break {
+				break_space = true
+			}
+			previous_space = true
+			previous_break = false
+		} else if is_break(value, i) {
+			line_breaks = true
+			if i == 0 {
+				leading_break = true
+			}
+			if i+width(value[i]) == len(value) {
+				trailing_break = true
+			}
+			if previous_space {
+				space_break = true
+			}
+			previous_space = false
+			previous_break = true
+		} else {
+			previous_space = false
+			previous_break = false
+		}
+
+		// [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
+		preceded_by_whitespace = is_blankz(value, i)
+	}
+
+	emitter.scalar_data.multiline = line_breaks
+	emitter.scalar_data.flow_plain_allowed = true
+	emitter.scalar_data.block_plain_allowed = true
+	emitter.scalar_data.single_quoted_allowed = true
+	emitter.scalar_data.block_allowed = true
+
+	if leading_space || leading_break || trailing_space || trailing_break {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	if trailing_space {
+		emitter.scalar_data.block_allowed = false
+	}
+	if break_space {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+		emitter.scalar_data.single_quoted_allowed = false
+	}
+	if space_break || special_characters {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+		emitter.scalar_data.single_quoted_allowed = false
+		emitter.scalar_data.block_allowed = false
+	}
+	if line_breaks {
+		emitter.scalar_data.flow_plain_allowed = false
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	if flow_indicators {
+		emitter.scalar_data.flow_plain_allowed = false
+	}
+	if block_indicators {
+		emitter.scalar_data.block_plain_allowed = false
+	}
+	return true
+}
+
+// Check if the event data is valid.
+func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
+
+	emitter.anchor_data.anchor = nil
+	emitter.tag_data.handle = nil
+	emitter.tag_data.suffix = nil
+	emitter.scalar_data.value = nil
+
+	switch event.typ {
+	case yaml_ALIAS_EVENT:
+		if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) {
+			return false
+		}
+
+	case yaml_SCALAR_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+		if !yaml_emitter_analyze_scalar(emitter, event.value) {
+			return false
+		}
+
+	case yaml_SEQUENCE_START_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+
+	case yaml_MAPPING_START_EVENT:
+		if len(event.anchor) > 0 {
+			if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
+				return false
+			}
+		}
+		if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
+			if !yaml_emitter_analyze_tag(emitter, event.tag) {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// Write the BOM character.
+func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
+	if !flush(emitter) {
+		return false
+	}
+	pos := emitter.buffer_pos
+	emitter.buffer[pos+0] = '\xEF'
+	emitter.buffer[pos+1] = '\xBB'
+	emitter.buffer[pos+2] = '\xBF'
+	emitter.buffer_pos += 3
+	return true
+}
+
+func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool {
+	indent := emitter.indent
+	if indent < 0 {
+		indent = 0
+	}
+	if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) {
+		if !put_break(emitter) {
+			return false
+		}
+	}
+	for emitter.column < indent {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	emitter.whitespace = true
+	emitter.indention = true
+	return true
+}
+
+func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool {
+	if need_whitespace && !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	if !write_all(emitter, indicator) {
+		return false
+	}
+	emitter.whitespace = is_whitespace
+	emitter.indention = (emitter.indention && is_indention)
+	emitter.open_ended = false
+	return true
+}
+
+func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool {
+	if !write_all(emitter, value) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool {
+	if !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	if !write_all(emitter, value) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool {
+	if need_whitespace && !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+	for i := 0; i < len(value); {
+		var must_write bool
+		switch value[i] {
+		case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']':
+			must_write = true
+		default:
+			must_write = is_alpha(value, i)
+		}
+		if must_write {
+			if !write(emitter, value, &i) {
+				return false
+			}
+		} else {
+			w := width(value[i])
+			for k := 0; k < w; k++ {
+				octet := value[i]
+				i++
+				if !put(emitter, '%') {
+					return false
+				}
+
+				c := octet >> 4
+				if c < 10 {
+					c += '0'
+				} else {
+					c += 'A' - 10
+				}
+				if !put(emitter, c) {
+					return false
+				}
+
+				c = octet & 0x0f
+				if c < 10 {
+					c += '0'
+				} else {
+					c += 'A' - 10
+				}
+				if !put(emitter, c) {
+					return false
+				}
+			}
+		}
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+	if !emitter.whitespace {
+		if !put(emitter, ' ') {
+			return false
+		}
+	}
+
+	spaces := false
+	breaks := false
+	for i := 0; i < len(value); {
+		if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			spaces = true
+		} else if is_break(value, i) {
+			if !breaks && value[i] == '\n' {
+				if !put_break(emitter) {
+					return false
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			spaces = false
+			breaks = false
+		}
+	}
+
+	emitter.whitespace = false
+	emitter.indention = false
+	if emitter.root_context {
+		emitter.open_ended = true
+	}
+
+	return true
+}
+
+func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+
+	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) {
+		return false
+	}
+
+	spaces := false
+	breaks := false
+	for i := 0; i < len(value); {
+		if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			spaces = true
+		} else if is_break(value, i) {
+			if !breaks && value[i] == '\n' {
+				if !put_break(emitter) {
+					return false
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if value[i] == '\'' {
+				if !put(emitter, '\'') {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			spaces = false
+			breaks = false
+		}
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
+	spaces := false
+	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) {
+		return false
+	}
+
+	for i := 0; i < len(value); {
+		if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) ||
+			is_bom(value, i) || is_break(value, i) ||
+			value[i] == '"' || value[i] == '\\' {
+
+			octet := value[i]
+
+			var w int
+			var v rune
+			switch {
+			case octet&0x80 == 0x00:
+				w, v = 1, rune(octet&0x7F)
+			case octet&0xE0 == 0xC0:
+				w, v = 2, rune(octet&0x1F)
+			case octet&0xF0 == 0xE0:
+				w, v = 3, rune(octet&0x0F)
+			case octet&0xF8 == 0xF0:
+				w, v = 4, rune(octet&0x07)
+			}
+			for k := 1; k < w; k++ {
+				octet = value[i+k]
+				v = (v << 6) + (rune(octet) & 0x3F)
+			}
+			i += w
+
+			if !put(emitter, '\\') {
+				return false
+			}
+
+			var ok bool
+			switch v {
+			case 0x00:
+				ok = put(emitter, '0')
+			case 0x07:
+				ok = put(emitter, 'a')
+			case 0x08:
+				ok = put(emitter, 'b')
+			case 0x09:
+				ok = put(emitter, 't')
+			case 0x0A:
+				ok = put(emitter, 'n')
+			case 0x0b:
+				ok = put(emitter, 'v')
+			case 0x0c:
+				ok = put(emitter, 'f')
+			case 0x0d:
+				ok = put(emitter, 'r')
+			case 0x1b:
+				ok = put(emitter, 'e')
+			case 0x22:
+				ok = put(emitter, '"')
+			case 0x5c:
+				ok = put(emitter, '\\')
+			case 0x85:
+				ok = put(emitter, 'N')
+			case 0xA0:
+				ok = put(emitter, '_')
+			case 0x2028:
+				ok = put(emitter, 'L')
+			case 0x2029:
+				ok = put(emitter, 'P')
+			default:
+				if v <= 0xFF {
+					ok = put(emitter, 'x')
+					w = 2
+				} else if v <= 0xFFFF {
+					ok = put(emitter, 'u')
+					w = 4
+				} else {
+					ok = put(emitter, 'U')
+					w = 8
+				}
+				for k := (w - 1) * 4; ok && k >= 0; k -= 4 {
+					digit := byte((v >> uint(k)) & 0x0F)
+					if digit < 10 {
+						ok = put(emitter, digit+'0')
+					} else {
+						ok = put(emitter, digit+'A'-10)
+					}
+				}
+			}
+			if !ok {
+				return false
+			}
+			spaces = false
+		} else if is_space(value, i) {
+			if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				if is_space(value, i+1) {
+					if !put(emitter, '\\') {
+						return false
+					}
+				}
+				i += width(value[i])
+			} else if !write(emitter, value, &i) {
+				return false
+			}
+			spaces = true
+		} else {
+			if !write(emitter, value, &i) {
+				return false
+			}
+			spaces = false
+		}
+	}
+	if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) {
+		return false
+	}
+	emitter.whitespace = false
+	emitter.indention = false
+	return true
+}
+
+func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool {
+	if is_space(value, 0) || is_break(value, 0) {
+		indent_hint := []byte{'0' + byte(emitter.best_indent)}
+		if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) {
+			return false
+		}
+	}
+
+	emitter.open_ended = false
+
+	var chomp_hint [1]byte
+	if len(value) == 0 {
+		chomp_hint[0] = '-'
+	} else {
+		i := len(value) - 1
+		for value[i]&0xC0 == 0x80 {
+			i--
+		}
+		if !is_break(value, i) {
+			chomp_hint[0] = '-'
+		} else if i == 0 {
+			chomp_hint[0] = '+'
+			emitter.open_ended = true
+		} else {
+			i--
+			for value[i]&0xC0 == 0x80 {
+				i--
+			}
+			if is_break(value, i) {
+				chomp_hint[0] = '+'
+				emitter.open_ended = true
+			}
+		}
+	}
+	if chomp_hint[0] != 0 {
+		if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) {
+			return false
+		}
+	}
+	return true
+}
+
+func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) {
+		return false
+	}
+	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+		return false
+	}
+	if !put_break(emitter) {
+		return false
+	}
+	emitter.indention = true
+	emitter.whitespace = true
+	breaks := true
+	for i := 0; i < len(value); {
+		if is_break(value, i) {
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+			}
+			if !write(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = false
+			breaks = false
+		}
+	}
+
+	return true
+}
+
+func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool {
+	if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) {
+		return false
+	}
+	if !yaml_emitter_write_block_scalar_hints(emitter, value) {
+		return false
+	}
+
+	if !put_break(emitter) {
+		return false
+	}
+	emitter.indention = true
+	emitter.whitespace = true
+
+	breaks := true
+	leading_spaces := true
+	for i := 0; i < len(value); {
+		if is_break(value, i) {
+			if !breaks && !leading_spaces && value[i] == '\n' {
+				k := 0
+				for is_break(value, k) {
+					k += width(value[k])
+				}
+				if !is_blankz(value, k) {
+					if !put_break(emitter) {
+						return false
+					}
+				}
+			}
+			if !write_break(emitter, value, &i) {
+				return false
+			}
+			emitter.indention = true
+			breaks = true
+		} else {
+			if breaks {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				leading_spaces = is_blank(value, i)
+			}
+			if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width {
+				if !yaml_emitter_write_indent(emitter) {
+					return false
+				}
+				i += width(value[i])
+			} else {
+				if !write(emitter, value, &i) {
+					return false
+				}
+			}
+			emitter.indention = false
+			breaks = false
+		}
+	}
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/encode.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/encode.go
new file mode 100644
index 00000000..84f84995
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/encode.go
@@ -0,0 +1,306 @@
+package yaml
+
+import (
+	"encoding"
+	"fmt"
+	"reflect"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type encoder struct {
+	emitter yaml_emitter_t
+	event   yaml_event_t
+	out     []byte
+	flow    bool
+}
+
+func newEncoder() (e *encoder) {
+	e = &encoder{}
+	e.must(yaml_emitter_initialize(&e.emitter))
+	yaml_emitter_set_output_string(&e.emitter, &e.out)
+	yaml_emitter_set_unicode(&e.emitter, true)
+	e.must(yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING))
+	e.emit()
+	e.must(yaml_document_start_event_initialize(&e.event, nil, nil, true))
+	e.emit()
+	return e
+}
+
+func (e *encoder) finish() {
+	e.must(yaml_document_end_event_initialize(&e.event, true))
+	e.emit()
+	e.emitter.open_ended = false
+	e.must(yaml_stream_end_event_initialize(&e.event))
+	e.emit()
+}
+
+func (e *encoder) destroy() {
+	yaml_emitter_delete(&e.emitter)
+}
+
+func (e *encoder) emit() {
+	// This will internally delete the e.event value.
+	if !yaml_emitter_emit(&e.emitter, &e.event) && e.event.typ != yaml_DOCUMENT_END_EVENT && e.event.typ != yaml_STREAM_END_EVENT {
+		e.must(false)
+	}
+}
+
+func (e *encoder) must(ok bool) {
+	if !ok {
+		msg := e.emitter.problem
+		if msg == "" {
+			msg = "unknown problem generating YAML content"
+		}
+		failf("%s", msg)
+	}
+}
+
+func (e *encoder) marshal(tag string, in reflect.Value) {
+	if !in.IsValid() {
+		e.nilv()
+		return
+	}
+	iface := in.Interface()
+	if m, ok := iface.(Marshaler); ok {
+		v, err := m.MarshalYAML()
+		if err != nil {
+			fail(err)
+		}
+		if v == nil {
+			e.nilv()
+			return
+		}
+		in = reflect.ValueOf(v)
+	} else if m, ok := iface.(encoding.TextMarshaler); ok {
+		text, err := m.MarshalText()
+		if err != nil {
+			fail(err)
+		}
+		in = reflect.ValueOf(string(text))
+	}
+	switch in.Kind() {
+	case reflect.Interface:
+		if in.IsNil() {
+			e.nilv()
+		} else {
+			e.marshal(tag, in.Elem())
+		}
+	case reflect.Map:
+		e.mapv(tag, in)
+	case reflect.Ptr:
+		if in.IsNil() {
+			e.nilv()
+		} else {
+			e.marshal(tag, in.Elem())
+		}
+	case reflect.Struct:
+		e.structv(tag, in)
+	case reflect.Slice:
+		if in.Type().Elem() == mapItemType {
+			e.itemsv(tag, in)
+		} else {
+			e.slicev(tag, in)
+		}
+	case reflect.String:
+		e.stringv(tag, in)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		if in.Type() == durationType {
+			e.stringv(tag, reflect.ValueOf(iface.(time.Duration).String()))
+		} else {
+			e.intv(tag, in)
+		}
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		e.uintv(tag, in)
+	case reflect.Float32, reflect.Float64:
+		e.floatv(tag, in)
+	case reflect.Bool:
+		e.boolv(tag, in)
+	default:
+		panic("cannot marshal type: " + in.Type().String())
+	}
+}
+
+func (e *encoder) mapv(tag string, in reflect.Value) {
+	e.mappingv(tag, func() {
+		keys := keyList(in.MapKeys())
+		sort.Sort(keys)
+		for _, k := range keys {
+			e.marshal("", k)
+			e.marshal("", in.MapIndex(k))
+		}
+	})
+}
+
+func (e *encoder) itemsv(tag string, in reflect.Value) {
+	e.mappingv(tag, func() {
+		slice := in.Convert(reflect.TypeOf([]MapItem{})).Interface().([]MapItem)
+		for _, item := range slice {
+			e.marshal("", reflect.ValueOf(item.Key))
+			e.marshal("", reflect.ValueOf(item.Value))
+		}
+	})
+}
+
+func (e *encoder) structv(tag string, in reflect.Value) {
+	sinfo, err := getStructInfo(in.Type())
+	if err != nil {
+		panic(err)
+	}
+	e.mappingv(tag, func() {
+		for _, info := range sinfo.FieldsList {
+			var value reflect.Value
+			if info.Inline == nil {
+				value = in.Field(info.Num)
+			} else {
+				value = in.FieldByIndex(info.Inline)
+			}
+			if info.OmitEmpty && isZero(value) {
+				continue
+			}
+			e.marshal("", reflect.ValueOf(info.Key))
+			e.flow = info.Flow
+			e.marshal("", value)
+		}
+		if sinfo.InlineMap >= 0 {
+			m := in.Field(sinfo.InlineMap)
+			if m.Len() > 0 {
+				e.flow = false
+				keys := keyList(m.MapKeys())
+				sort.Sort(keys)
+				for _, k := range keys {
+					if _, found := sinfo.FieldsMap[k.String()]; found {
+						panic(fmt.Sprintf("Can't have key %q in inlined map; conflicts with struct field", k.String()))
+					}
+					e.marshal("", k)
+					e.flow = false
+					e.marshal("", m.MapIndex(k))
+				}
+			}
+		}
+	})
+}
+
+func (e *encoder) mappingv(tag string, f func()) {
+	implicit := tag == ""
+	style := yaml_BLOCK_MAPPING_STYLE
+	if e.flow {
+		e.flow = false
+		style = yaml_FLOW_MAPPING_STYLE
+	}
+	e.must(yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
+	e.emit()
+	f()
+	e.must(yaml_mapping_end_event_initialize(&e.event))
+	e.emit()
+}
+
+func (e *encoder) slicev(tag string, in reflect.Value) {
+	implicit := tag == ""
+	style := yaml_BLOCK_SEQUENCE_STYLE
+	if e.flow {
+		e.flow = false
+		style = yaml_FLOW_SEQUENCE_STYLE
+	}
+	e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
+	e.emit()
+	n := in.Len()
+	for i := 0; i < n; i++ {
+		e.marshal("", in.Index(i))
+	}
+	e.must(yaml_sequence_end_event_initialize(&e.event))
+	e.emit()
+}
+
+// isBase60 returns whether s is in base 60 notation as defined in YAML 1.1.
+//
+// The base 60 float notation in YAML 1.1 is a terrible idea and is unsupported
+// in YAML 1.2 and by this package, but these should be marshalled quoted for
+// the time being for compatibility with other parsers.
+func isBase60Float(s string) (result bool) {
+	// Fast path.
+	if s == "" {
+		return false
+	}
+	c := s[0]
+	if !(c == '+' || c == '-' || c >= '0' && c <= '9') || strings.IndexByte(s, ':') < 0 {
+		return false
+	}
+	// Do the full match.
+	return base60float.MatchString(s)
+}
+
+// From http://yaml.org/type/float.html, except the regular expression there
+// is bogus. In practice parsers do not enforce the "\.[0-9_]*" suffix.
+var base60float = regexp.MustCompile(`^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+(?:\.[0-9_]*)?$`)
+
+func (e *encoder) stringv(tag string, in reflect.Value) {
+	var style yaml_scalar_style_t
+	s := in.String()
+	rtag, rs := resolve("", s)
+	if rtag == yaml_BINARY_TAG {
+		if tag == "" || tag == yaml_STR_TAG {
+			tag = rtag
+			s = rs.(string)
+		} else if tag == yaml_BINARY_TAG {
+			failf("explicitly tagged !!binary data must be base64-encoded")
+		} else {
+			failf("cannot marshal invalid UTF-8 data as %s", shortTag(tag))
+		}
+	}
+	if tag == "" && (rtag != yaml_STR_TAG || isBase60Float(s)) {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	} else if strings.Contains(s, "\n") {
+		style = yaml_LITERAL_SCALAR_STYLE
+	} else {
+		style = yaml_PLAIN_SCALAR_STYLE
+	}
+	e.emitScalar(s, "", tag, style)
+}
+
+func (e *encoder) boolv(tag string, in reflect.Value) {
+	var s string
+	if in.Bool() {
+		s = "true"
+	} else {
+		s = "false"
+	}
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) intv(tag string, in reflect.Value) {
+	s := strconv.FormatInt(in.Int(), 10)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) uintv(tag string, in reflect.Value) {
+	s := strconv.FormatUint(in.Uint(), 10)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) floatv(tag string, in reflect.Value) {
+	// FIXME: Handle 64 bits here.
+	s := strconv.FormatFloat(float64(in.Float()), 'g', -1, 32)
+	switch s {
+	case "+Inf":
+		s = ".inf"
+	case "-Inf":
+		s = "-.inf"
+	case "NaN":
+		s = ".nan"
+	}
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) nilv() {
+	e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t) {
+	implicit := tag == ""
+	e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style))
+	e.emit()
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/parserc.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/parserc.go
new file mode 100644
index 00000000..81d05dfe
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/parserc.go
@@ -0,0 +1,1095 @@
+package yaml
+
+import (
+	"bytes"
+)
+
+// The parser implements the following grammar:
+//
+// stream               ::= STREAM-START implicit_document? explicit_document* STREAM-END
+// implicit_document    ::= block_node DOCUMENT-END*
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+// block_node_or_indentless_sequence    ::=
+//                          ALIAS
+//                          | properties (block_content | indentless_block_sequence)?
+//                          | block_content
+//                          | indentless_block_sequence
+// block_node           ::= ALIAS
+//                          | properties block_content?
+//                          | block_content
+// flow_node            ::= ALIAS
+//                          | properties flow_content?
+//                          | flow_content
+// properties           ::= TAG ANCHOR? | ANCHOR TAG?
+// block_content        ::= block_collection | flow_collection | SCALAR
+// flow_content         ::= flow_collection | SCALAR
+// block_collection     ::= block_sequence | block_mapping
+// flow_collection      ::= flow_sequence | flow_mapping
+// block_sequence       ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+// indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
+// block_mapping        ::= BLOCK-MAPPING_START
+//                          ((KEY block_node_or_indentless_sequence?)?
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//                          BLOCK-END
+// flow_sequence        ::= FLOW-SEQUENCE-START
+//                          (flow_sequence_entry FLOW-ENTRY)*
+//                          flow_sequence_entry?
+//                          FLOW-SEQUENCE-END
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+// flow_mapping         ::= FLOW-MAPPING-START
+//                          (flow_mapping_entry FLOW-ENTRY)*
+//                          flow_mapping_entry?
+//                          FLOW-MAPPING-END
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+
+// Peek the next token in the token queue.
+func peek_token(parser *yaml_parser_t) *yaml_token_t {
+	if parser.token_available || yaml_parser_fetch_more_tokens(parser) {
+		return &parser.tokens[parser.tokens_head]
+	}
+	return nil
+}
+
+// Remove the next token from the queue (must be called after peek_token).
+func skip_token(parser *yaml_parser_t) {
+	parser.token_available = false
+	parser.tokens_parsed++
+	parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN
+	parser.tokens_head++
+}
+
+// Get the next event.
+func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool {
+	// Erase the event object.
+	*event = yaml_event_t{}
+
+	// No events after the end of the stream or error.
+	if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE {
+		return true
+	}
+
+	// Generate the next event.
+	return yaml_parser_state_machine(parser, event)
+}
+
+// Set parser error.
+func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool {
+	parser.error = yaml_PARSER_ERROR
+	parser.problem = problem
+	parser.problem_mark = problem_mark
+	return false
+}
+
+func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool {
+	parser.error = yaml_PARSER_ERROR
+	parser.context = context
+	parser.context_mark = context_mark
+	parser.problem = problem
+	parser.problem_mark = problem_mark
+	return false
+}
+
+// State dispatcher.
+func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool {
+	//trace("yaml_parser_state_machine", "state:", parser.state.String())
+
+	switch parser.state {
+	case yaml_PARSE_STREAM_START_STATE:
+		return yaml_parser_parse_stream_start(parser, event)
+
+	case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+		return yaml_parser_parse_document_start(parser, event, true)
+
+	case yaml_PARSE_DOCUMENT_START_STATE:
+		return yaml_parser_parse_document_start(parser, event, false)
+
+	case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+		return yaml_parser_parse_document_content(parser, event)
+
+	case yaml_PARSE_DOCUMENT_END_STATE:
+		return yaml_parser_parse_document_end(parser, event)
+
+	case yaml_PARSE_BLOCK_NODE_STATE:
+		return yaml_parser_parse_node(parser, event, true, false)
+
+	case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+		return yaml_parser_parse_node(parser, event, true, true)
+
+	case yaml_PARSE_FLOW_NODE_STATE:
+		return yaml_parser_parse_node(parser, event, false, false)
+
+	case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+		return yaml_parser_parse_block_sequence_entry(parser, event, true)
+
+	case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_block_sequence_entry(parser, event, false)
+
+	case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_indentless_sequence_entry(parser, event)
+
+	case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return yaml_parser_parse_block_mapping_key(parser, event, true)
+
+	case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+		return yaml_parser_parse_block_mapping_key(parser, event, false)
+
+	case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_block_mapping_value(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+		return yaml_parser_parse_flow_sequence_entry(parser, event, true)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+		return yaml_parser_parse_flow_sequence_entry(parser, event, false)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event)
+
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+		return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event)
+
+	case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+		return yaml_parser_parse_flow_mapping_key(parser, event, true)
+
+	case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+		return yaml_parser_parse_flow_mapping_key(parser, event, false)
+
+	case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+		return yaml_parser_parse_flow_mapping_value(parser, event, false)
+
+	case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+		return yaml_parser_parse_flow_mapping_value(parser, event, true)
+
+	default:
+		panic("invalid parser state")
+	}
+}
+
+// Parse the production:
+// stream   ::= STREAM-START implicit_document? explicit_document* STREAM-END
+//              ************
+func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_STREAM_START_TOKEN {
+		return yaml_parser_set_parser_error(parser, "did not find expected <stream-start>", token.start_mark)
+	}
+	parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE
+	*event = yaml_event_t{
+		typ:        yaml_STREAM_START_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+		encoding:   token.encoding,
+	}
+	skip_token(parser)
+	return true
+}
+
+// Parse the productions:
+// implicit_document    ::= block_node DOCUMENT-END*
+//                          *
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//                          *************************
+func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool {
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	// Parse extra document end indicators.
+	if !implicit {
+		for token.typ == yaml_DOCUMENT_END_TOKEN {
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	}
+
+	if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN &&
+		token.typ != yaml_TAG_DIRECTIVE_TOKEN &&
+		token.typ != yaml_DOCUMENT_START_TOKEN &&
+		token.typ != yaml_STREAM_END_TOKEN {
+		// Parse an implicit document.
+		if !yaml_parser_process_directives(parser, nil, nil) {
+			return false
+		}
+		parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+		parser.state = yaml_PARSE_BLOCK_NODE_STATE
+
+		*event = yaml_event_t{
+			typ:        yaml_DOCUMENT_START_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+
+	} else if token.typ != yaml_STREAM_END_TOKEN {
+		// Parse an explicit document.
+		var version_directive *yaml_version_directive_t
+		var tag_directives []yaml_tag_directive_t
+		start_mark := token.start_mark
+		if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) {
+			return false
+		}
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_DOCUMENT_START_TOKEN {
+			yaml_parser_set_parser_error(parser,
+				"did not find expected <document start>", token.start_mark)
+			return false
+		}
+		parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE)
+		parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE
+		end_mark := token.end_mark
+
+		*event = yaml_event_t{
+			typ:               yaml_DOCUMENT_START_EVENT,
+			start_mark:        start_mark,
+			end_mark:          end_mark,
+			version_directive: version_directive,
+			tag_directives:    tag_directives,
+			implicit:          false,
+		}
+		skip_token(parser)
+
+	} else {
+		// Parse the stream end.
+		parser.state = yaml_PARSE_END_STATE
+		*event = yaml_event_t{
+			typ:        yaml_STREAM_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+		skip_token(parser)
+	}
+
+	return true
+}
+
+// Parse the productions:
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//                                                    ***********
+//
+func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VERSION_DIRECTIVE_TOKEN ||
+		token.typ == yaml_TAG_DIRECTIVE_TOKEN ||
+		token.typ == yaml_DOCUMENT_START_TOKEN ||
+		token.typ == yaml_DOCUMENT_END_TOKEN ||
+		token.typ == yaml_STREAM_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		return yaml_parser_process_empty_scalar(parser, event,
+			token.start_mark)
+	}
+	return yaml_parser_parse_node(parser, event, true, false)
+}
+
+// Parse the productions:
+// implicit_document    ::= block_node DOCUMENT-END*
+//                                     *************
+// explicit_document    ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
+//
+func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	start_mark := token.start_mark
+	end_mark := token.start_mark
+
+	implicit := true
+	if token.typ == yaml_DOCUMENT_END_TOKEN {
+		end_mark = token.end_mark
+		skip_token(parser)
+		implicit = false
+	}
+
+	parser.tag_directives = parser.tag_directives[:0]
+
+	parser.state = yaml_PARSE_DOCUMENT_START_STATE
+	*event = yaml_event_t{
+		typ:        yaml_DOCUMENT_END_EVENT,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		implicit:   implicit,
+	}
+	return true
+}
+
+// Parse the productions:
+// block_node_or_indentless_sequence    ::=
+//                          ALIAS
+//                          *****
+//                          | properties (block_content | indentless_block_sequence)?
+//                            **********  *
+//                          | block_content | indentless_block_sequence
+//                            *
+// block_node           ::= ALIAS
+//                          *****
+//                          | properties block_content?
+//                            ********** *
+//                          | block_content
+//                            *
+// flow_node            ::= ALIAS
+//                          *****
+//                          | properties flow_content?
+//                            ********** *
+//                          | flow_content
+//                            *
+// properties           ::= TAG ANCHOR? | ANCHOR TAG?
+//                          *************************
+// block_content        ::= block_collection | flow_collection | SCALAR
+//                                                               ******
+// flow_content         ::= flow_collection | SCALAR
+//                                            ******
+func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool {
+	//defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)()
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_ALIAS_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		*event = yaml_event_t{
+			typ:        yaml_ALIAS_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+			anchor:     token.value,
+		}
+		skip_token(parser)
+		return true
+	}
+
+	start_mark := token.start_mark
+	end_mark := token.start_mark
+
+	var tag_token bool
+	var tag_handle, tag_suffix, anchor []byte
+	var tag_mark yaml_mark_t
+	if token.typ == yaml_ANCHOR_TOKEN {
+		anchor = token.value
+		start_mark = token.start_mark
+		end_mark = token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ == yaml_TAG_TOKEN {
+			tag_token = true
+			tag_handle = token.value
+			tag_suffix = token.suffix
+			tag_mark = token.start_mark
+			end_mark = token.end_mark
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	} else if token.typ == yaml_TAG_TOKEN {
+		tag_token = true
+		tag_handle = token.value
+		tag_suffix = token.suffix
+		start_mark = token.start_mark
+		tag_mark = token.start_mark
+		end_mark = token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ == yaml_ANCHOR_TOKEN {
+			anchor = token.value
+			end_mark = token.end_mark
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+		}
+	}
+
+	var tag []byte
+	if tag_token {
+		if len(tag_handle) == 0 {
+			tag = tag_suffix
+			tag_suffix = nil
+		} else {
+			for i := range parser.tag_directives {
+				if bytes.Equal(parser.tag_directives[i].handle, tag_handle) {
+					tag = append([]byte(nil), parser.tag_directives[i].prefix...)
+					tag = append(tag, tag_suffix...)
+					break
+				}
+			}
+			if len(tag) == 0 {
+				yaml_parser_set_parser_error_context(parser,
+					"while parsing a node", start_mark,
+					"found undefined tag handle", tag_mark)
+				return false
+			}
+		}
+	}
+
+	implicit := len(tag) == 0
+	if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if token.typ == yaml_SCALAR_TOKEN {
+		var plain_implicit, quoted_implicit bool
+		end_mark = token.end_mark
+		if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') {
+			plain_implicit = true
+		} else if len(tag) == 0 {
+			quoted_implicit = true
+		}
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+
+		*event = yaml_event_t{
+			typ:             yaml_SCALAR_EVENT,
+			start_mark:      start_mark,
+			end_mark:        end_mark,
+			anchor:          anchor,
+			tag:             tag,
+			value:           token.value,
+			implicit:        plain_implicit,
+			quoted_implicit: quoted_implicit,
+			style:           yaml_style_t(token.style),
+		}
+		skip_token(parser)
+		return true
+	}
+	if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN {
+		// [Go] Some of the events below can be merged as they differ only on style.
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_FLOW_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if token.typ == yaml_FLOW_MAPPING_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+		}
+		return true
+	}
+	if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE),
+		}
+		return true
+	}
+	if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN {
+		end_mark = token.end_mark
+		parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_START_EVENT,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			anchor:     anchor,
+			tag:        tag,
+			implicit:   implicit,
+			style:      yaml_style_t(yaml_BLOCK_MAPPING_STYLE),
+		}
+		return true
+	}
+	if len(anchor) > 0 || len(tag) > 0 {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+
+		*event = yaml_event_t{
+			typ:             yaml_SCALAR_EVENT,
+			start_mark:      start_mark,
+			end_mark:        end_mark,
+			anchor:          anchor,
+			tag:             tag,
+			implicit:        implicit,
+			quoted_implicit: false,
+			style:           yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+		}
+		return true
+	}
+
+	context := "while parsing a flow node"
+	if block {
+		context = "while parsing a block node"
+	}
+	yaml_parser_set_parser_error_context(parser, context, start_mark,
+		"did not find expected node content", token.start_mark)
+	return false
+}
+
+// Parse the productions:
+// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
+//                    ********************  *********** *             *********
+//
+func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, true, false)
+		} else {
+			parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE
+			return yaml_parser_process_empty_scalar(parser, event, mark)
+		}
+	}
+	if token.typ == yaml_BLOCK_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		parser.marks = parser.marks[:len(parser.marks)-1]
+
+		*event = yaml_event_t{
+			typ:        yaml_SEQUENCE_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+
+		skip_token(parser)
+		return true
+	}
+
+	context_mark := parser.marks[len(parser.marks)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	return yaml_parser_set_parser_error_context(parser,
+		"while parsing a block collection", context_mark,
+		"did not find expected '-' indicator", token.start_mark)
+}
+
+// Parse the productions:
+// indentless_sequence  ::= (BLOCK-ENTRY block_node?)+
+//                           *********** *
+func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_BLOCK_ENTRY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_BLOCK_ENTRY_TOKEN &&
+			token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, true, false)
+		}
+		parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, mark)
+	}
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+
+	*event = yaml_event_t{
+		typ:        yaml_SEQUENCE_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.start_mark, // [Go] Shouldn't this be token.end_mark?
+	}
+	return true
+}
+
+// Parse the productions:
+// block_mapping        ::= BLOCK-MAPPING_START
+//                          *******************
+//                          ((KEY block_node_or_indentless_sequence?)?
+//                            *** *
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//
+//                          BLOCK-END
+//                          *********
+//
+func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ == yaml_KEY_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE)
+			return yaml_parser_parse_node(parser, event, true, true)
+		} else {
+			parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE
+			return yaml_parser_process_empty_scalar(parser, event, mark)
+		}
+	} else if token.typ == yaml_BLOCK_END_TOKEN {
+		parser.state = parser.states[len(parser.states)-1]
+		parser.states = parser.states[:len(parser.states)-1]
+		parser.marks = parser.marks[:len(parser.marks)-1]
+		*event = yaml_event_t{
+			typ:        yaml_MAPPING_END_EVENT,
+			start_mark: token.start_mark,
+			end_mark:   token.end_mark,
+		}
+		skip_token(parser)
+		return true
+	}
+
+	context_mark := parser.marks[len(parser.marks)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	return yaml_parser_set_parser_error_context(parser,
+		"while parsing a block mapping", context_mark,
+		"did not find expected key", token.start_mark)
+}
+
+// Parse the productions:
+// block_mapping        ::= BLOCK-MAPPING_START
+//
+//                          ((KEY block_node_or_indentless_sequence?)?
+//
+//                          (VALUE block_node_or_indentless_sequence?)?)*
+//                           ***** *
+//                          BLOCK-END
+//
+//
+func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		mark := token.end_mark
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_KEY_TOKEN &&
+			token.typ != yaml_VALUE_TOKEN &&
+			token.typ != yaml_BLOCK_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE)
+			return yaml_parser_parse_node(parser, event, true, true)
+		}
+		parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, mark)
+	}
+	parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence        ::= FLOW-SEQUENCE-START
+//                          *******************
+//                          (flow_sequence_entry FLOW-ENTRY)*
+//                           *                   **********
+//                          flow_sequence_entry?
+//                          *
+//                          FLOW-SEQUENCE-END
+//                          *****************
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                          *
+//
+func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+		if !first {
+			if token.typ == yaml_FLOW_ENTRY_TOKEN {
+				skip_token(parser)
+				token = peek_token(parser)
+				if token == nil {
+					return false
+				}
+			} else {
+				context_mark := parser.marks[len(parser.marks)-1]
+				parser.marks = parser.marks[:len(parser.marks)-1]
+				return yaml_parser_set_parser_error_context(parser,
+					"while parsing a flow sequence", context_mark,
+					"did not find expected ',' or ']'", token.start_mark)
+			}
+		}
+
+		if token.typ == yaml_KEY_TOKEN {
+			parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE
+			*event = yaml_event_t{
+				typ:        yaml_MAPPING_START_EVENT,
+				start_mark: token.start_mark,
+				end_mark:   token.end_mark,
+				implicit:   true,
+				style:      yaml_style_t(yaml_FLOW_MAPPING_STYLE),
+			}
+			skip_token(parser)
+			return true
+		} else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+
+	*event = yaml_event_t{
+		typ:        yaml_SEQUENCE_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+	}
+
+	skip_token(parser)
+	return true
+}
+
+//
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                      *** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ != yaml_VALUE_TOKEN &&
+		token.typ != yaml_FLOW_ENTRY_TOKEN &&
+		token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+		parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE)
+		return yaml_parser_parse_node(parser, event, false, false)
+	}
+	mark := token.end_mark
+	skip_token(parser)
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE
+	return yaml_parser_process_empty_scalar(parser, event, mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                                      ***** *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		skip_token(parser)
+		token := peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Parse the productions:
+// flow_sequence_entry  ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                                                      *
+//
+func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE
+	*event = yaml_event_t{
+		typ:        yaml_MAPPING_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.start_mark, // [Go] Shouldn't this be end_mark?
+	}
+	return true
+}
+
+// Parse the productions:
+// flow_mapping         ::= FLOW-MAPPING-START
+//                          ******************
+//                          (flow_mapping_entry FLOW-ENTRY)*
+//                           *                  **********
+//                          flow_mapping_entry?
+//                          ******************
+//                          FLOW-MAPPING-END
+//                          ****************
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                          *           *** *
+//
+func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool {
+	if first {
+		token := peek_token(parser)
+		parser.marks = append(parser.marks, token.start_mark)
+		skip_token(parser)
+	}
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+		if !first {
+			if token.typ == yaml_FLOW_ENTRY_TOKEN {
+				skip_token(parser)
+				token = peek_token(parser)
+				if token == nil {
+					return false
+				}
+			} else {
+				context_mark := parser.marks[len(parser.marks)-1]
+				parser.marks = parser.marks[:len(parser.marks)-1]
+				return yaml_parser_set_parser_error_context(parser,
+					"while parsing a flow mapping", context_mark,
+					"did not find expected ',' or '}'", token.start_mark)
+			}
+		}
+
+		if token.typ == yaml_KEY_TOKEN {
+			skip_token(parser)
+			token = peek_token(parser)
+			if token == nil {
+				return false
+			}
+			if token.typ != yaml_VALUE_TOKEN &&
+				token.typ != yaml_FLOW_ENTRY_TOKEN &&
+				token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+				parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE)
+				return yaml_parser_parse_node(parser, event, false, false)
+			} else {
+				parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE
+				return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+			}
+		} else if token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+
+	parser.state = parser.states[len(parser.states)-1]
+	parser.states = parser.states[:len(parser.states)-1]
+	parser.marks = parser.marks[:len(parser.marks)-1]
+	*event = yaml_event_t{
+		typ:        yaml_MAPPING_END_EVENT,
+		start_mark: token.start_mark,
+		end_mark:   token.end_mark,
+	}
+	skip_token(parser)
+	return true
+}
+
+// Parse the productions:
+// flow_mapping_entry   ::= flow_node | KEY flow_node? (VALUE flow_node?)?
+//                                   *                  ***** *
+//
+func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool {
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+	if empty {
+		parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+		return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+	}
+	if token.typ == yaml_VALUE_TOKEN {
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+		if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN {
+			parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE)
+			return yaml_parser_parse_node(parser, event, false, false)
+		}
+	}
+	parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE
+	return yaml_parser_process_empty_scalar(parser, event, token.start_mark)
+}
+
+// Generate an empty scalar event.
+func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool {
+	*event = yaml_event_t{
+		typ:        yaml_SCALAR_EVENT,
+		start_mark: mark,
+		end_mark:   mark,
+		value:      nil, // Empty
+		implicit:   true,
+		style:      yaml_style_t(yaml_PLAIN_SCALAR_STYLE),
+	}
+	return true
+}
+
+var default_tag_directives = []yaml_tag_directive_t{
+	{[]byte("!"), []byte("!")},
+	{[]byte("!!"), []byte("tag:yaml.org,2002:")},
+}
+
+// Parse directives.
+func yaml_parser_process_directives(parser *yaml_parser_t,
+	version_directive_ref **yaml_version_directive_t,
+	tag_directives_ref *[]yaml_tag_directive_t) bool {
+
+	var version_directive *yaml_version_directive_t
+	var tag_directives []yaml_tag_directive_t
+
+	token := peek_token(parser)
+	if token == nil {
+		return false
+	}
+
+	for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+		if token.typ == yaml_VERSION_DIRECTIVE_TOKEN {
+			if version_directive != nil {
+				yaml_parser_set_parser_error(parser,
+					"found duplicate %YAML directive", token.start_mark)
+				return false
+			}
+			if token.major != 1 || token.minor != 1 {
+				yaml_parser_set_parser_error(parser,
+					"found incompatible YAML document", token.start_mark)
+				return false
+			}
+			version_directive = &yaml_version_directive_t{
+				major: token.major,
+				minor: token.minor,
+			}
+		} else if token.typ == yaml_TAG_DIRECTIVE_TOKEN {
+			value := yaml_tag_directive_t{
+				handle: token.value,
+				prefix: token.prefix,
+			}
+			if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) {
+				return false
+			}
+			tag_directives = append(tag_directives, value)
+		}
+
+		skip_token(parser)
+		token = peek_token(parser)
+		if token == nil {
+			return false
+		}
+	}
+
+	for i := range default_tag_directives {
+		if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) {
+			return false
+		}
+	}
+
+	if version_directive_ref != nil {
+		*version_directive_ref = version_directive
+	}
+	if tag_directives_ref != nil {
+		*tag_directives_ref = tag_directives
+	}
+	return true
+}
+
+// Append a tag directive to the directives stack.
+func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool {
+	for i := range parser.tag_directives {
+		if bytes.Equal(value.handle, parser.tag_directives[i].handle) {
+			if allow_duplicates {
+				return true
+			}
+			return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark)
+		}
+	}
+
+	// [Go] I suspect the copy is unnecessary. This was likely done
+	// because there was no way to track ownership of the data.
+	value_copy := yaml_tag_directive_t{
+		handle: make([]byte, len(value.handle)),
+		prefix: make([]byte, len(value.prefix)),
+	}
+	copy(value_copy.handle, value.handle)
+	copy(value_copy.prefix, value.prefix)
+	parser.tag_directives = append(parser.tag_directives, value_copy)
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/readerc.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/readerc.go
new file mode 100644
index 00000000..f4507917
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/readerc.go
@@ -0,0 +1,394 @@
+package yaml
+
+import (
+	"io"
+)
+
+// Set the reader error and return 0.
+func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool {
+	parser.error = yaml_READER_ERROR
+	parser.problem = problem
+	parser.problem_offset = offset
+	parser.problem_value = value
+	return false
+}
+
+// Byte order marks.
+const (
+	bom_UTF8    = "\xef\xbb\xbf"
+	bom_UTF16LE = "\xff\xfe"
+	bom_UTF16BE = "\xfe\xff"
+)
+
+// Determine the input stream encoding by checking the BOM symbol. If no BOM is
+// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
+func yaml_parser_determine_encoding(parser *yaml_parser_t) bool {
+	// Ensure that we had enough bytes in the raw buffer.
+	for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 {
+		if !yaml_parser_update_raw_buffer(parser) {
+			return false
+		}
+	}
+
+	// Determine the encoding.
+	buf := parser.raw_buffer
+	pos := parser.raw_buffer_pos
+	avail := len(buf) - pos
+	if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] {
+		parser.encoding = yaml_UTF16LE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] {
+		parser.encoding = yaml_UTF16BE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] {
+		parser.encoding = yaml_UTF8_ENCODING
+		parser.raw_buffer_pos += 3
+		parser.offset += 3
+	} else {
+		parser.encoding = yaml_UTF8_ENCODING
+	}
+	return true
+}
+
+// Update the raw buffer.
+func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool {
+	size_read := 0
+
+	// Return if the raw buffer is full.
+	if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) {
+		return true
+	}
+
+	// Return on EOF.
+	if parser.eof {
+		return true
+	}
+
+	// Move the remaining bytes in the raw buffer to the beginning.
+	if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) {
+		copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:])
+	}
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos]
+	parser.raw_buffer_pos = 0
+
+	// Call the read handler to fill the buffer.
+	size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)])
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read]
+	if err == io.EOF {
+		parser.eof = true
+	} else if err != nil {
+		return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1)
+	}
+	return true
+}
+
+// Ensure that the buffer contains at least `length` characters.
+// Return true on success, false on failure.
+//
+// The length is supposed to be significantly less that the buffer size.
+func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool {
+	if parser.read_handler == nil {
+		panic("read handler must be set")
+	}
+
+	// If the EOF flag is set and the raw buffer is empty, do nothing.
+	if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) {
+		return true
+	}
+
+	// Return if the buffer contains enough characters.
+	if parser.unread >= length {
+		return true
+	}
+
+	// Determine the input encoding if it is not known yet.
+	if parser.encoding == yaml_ANY_ENCODING {
+		if !yaml_parser_determine_encoding(parser) {
+			return false
+		}
+	}
+
+	// Move the unread characters to the beginning of the buffer.
+	buffer_len := len(parser.buffer)
+	if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len {
+		copy(parser.buffer, parser.buffer[parser.buffer_pos:])
+		buffer_len -= parser.buffer_pos
+		parser.buffer_pos = 0
+	} else if parser.buffer_pos == buffer_len {
+		buffer_len = 0
+		parser.buffer_pos = 0
+	}
+
+	// Open the whole buffer for writing, and cut it before returning.
+	parser.buffer = parser.buffer[:cap(parser.buffer)]
+
+	// Fill the buffer until it has enough characters.
+	first := true
+	for parser.unread < length {
+
+		// Fill the raw buffer if necessary.
+		if !first || parser.raw_buffer_pos == len(parser.raw_buffer) {
+			if !yaml_parser_update_raw_buffer(parser) {
+				parser.buffer = parser.buffer[:buffer_len]
+				return false
+			}
+		}
+		first = false
+
+		// Decode the raw buffer.
+	inner:
+		for parser.raw_buffer_pos != len(parser.raw_buffer) {
+			var value rune
+			var width int
+
+			raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos
+
+			// Decode the next character.
+			switch parser.encoding {
+			case yaml_UTF8_ENCODING:
+				// Decode a UTF-8 character.  Check RFC 3629
+				// (http://www.ietf.org/rfc/rfc3629.txt) for more details.
+				//
+				// The following table (taken from the RFC) is used for
+				// decoding.
+				//
+				//    Char. number range |        UTF-8 octet sequence
+				//      (hexadecimal)    |              (binary)
+				//   --------------------+------------------------------------
+				//   0000 0000-0000 007F | 0xxxxxxx
+				//   0000 0080-0000 07FF | 110xxxxx 10xxxxxx
+				//   0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+				//   0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				//
+				// Additionally, the characters in the range 0xD800-0xDFFF
+				// are prohibited as they are reserved for use with UTF-16
+				// surrogate pairs.
+
+				// Determine the length of the UTF-8 sequence.
+				octet := parser.raw_buffer[parser.raw_buffer_pos]
+				switch {
+				case octet&0x80 == 0x00:
+					width = 1
+				case octet&0xE0 == 0xC0:
+					width = 2
+				case octet&0xF0 == 0xE0:
+					width = 3
+				case octet&0xF8 == 0xF0:
+					width = 4
+				default:
+					// The leading octet is invalid.
+					return yaml_parser_set_reader_error(parser,
+						"invalid leading UTF-8 octet",
+						parser.offset, int(octet))
+				}
+
+				// Check if the raw buffer contains an incomplete character.
+				if width > raw_unread {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-8 octet sequence",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Decode the leading octet.
+				switch {
+				case octet&0x80 == 0x00:
+					value = rune(octet & 0x7F)
+				case octet&0xE0 == 0xC0:
+					value = rune(octet & 0x1F)
+				case octet&0xF0 == 0xE0:
+					value = rune(octet & 0x0F)
+				case octet&0xF8 == 0xF0:
+					value = rune(octet & 0x07)
+				default:
+					value = 0
+				}
+
+				// Check and decode the trailing octets.
+				for k := 1; k < width; k++ {
+					octet = parser.raw_buffer[parser.raw_buffer_pos+k]
+
+					// Check if the octet is valid.
+					if (octet & 0xC0) != 0x80 {
+						return yaml_parser_set_reader_error(parser,
+							"invalid trailing UTF-8 octet",
+							parser.offset+k, int(octet))
+					}
+
+					// Decode the octet.
+					value = (value << 6) + rune(octet&0x3F)
+				}
+
+				// Check the length of the sequence against the value.
+				switch {
+				case width == 1:
+				case width == 2 && value >= 0x80:
+				case width == 3 && value >= 0x800:
+				case width == 4 && value >= 0x10000:
+				default:
+					return yaml_parser_set_reader_error(parser,
+						"invalid length of a UTF-8 sequence",
+						parser.offset, -1)
+				}
+
+				// Check the range of the value.
+				if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF {
+					return yaml_parser_set_reader_error(parser,
+						"invalid Unicode character",
+						parser.offset, int(value))
+				}
+
+			case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING:
+				var low, high int
+				if parser.encoding == yaml_UTF16LE_ENCODING {
+					low, high = 0, 1
+				} else {
+					low, high = 1, 0
+				}
+
+				// The UTF-16 encoding is not as simple as one might
+				// naively think.  Check RFC 2781
+				// (http://www.ietf.org/rfc/rfc2781.txt).
+				//
+				// Normally, two subsequent bytes describe a Unicode
+				// character.  However a special technique (called a
+				// surrogate pair) is used for specifying character
+				// values larger than 0xFFFF.
+				//
+				// A surrogate pair consists of two pseudo-characters:
+				//      high surrogate area (0xD800-0xDBFF)
+				//      low surrogate area (0xDC00-0xDFFF)
+				//
+				// The following formulas are used for decoding
+				// and encoding characters using surrogate pairs:
+				//
+				//  U  = U' + 0x10000   (0x01 00 00 <= U <= 0x10 FF FF)
+				//  U' = yyyyyyyyyyxxxxxxxxxx   (0 <= U' <= 0x0F FF FF)
+				//  W1 = 110110yyyyyyyyyy
+				//  W2 = 110111xxxxxxxxxx
+				//
+				// where U is the character value, W1 is the high surrogate
+				// area, W2 is the low surrogate area.
+
+				// Check for incomplete UTF-16 character.
+				if raw_unread < 2 {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-16 character",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Get the character.
+				value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) +
+					(rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8)
+
+				// Check for unexpected low surrogate area.
+				if value&0xFC00 == 0xDC00 {
+					return yaml_parser_set_reader_error(parser,
+						"unexpected low surrogate area",
+						parser.offset, int(value))
+				}
+
+				// Check for a high surrogate area.
+				if value&0xFC00 == 0xD800 {
+					width = 4
+
+					// Check for incomplete surrogate pair.
+					if raw_unread < 4 {
+						if parser.eof {
+							return yaml_parser_set_reader_error(parser,
+								"incomplete UTF-16 surrogate pair",
+								parser.offset, -1)
+						}
+						break inner
+					}
+
+					// Get the next character.
+					value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) +
+						(rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8)
+
+					// Check for a low surrogate area.
+					if value2&0xFC00 != 0xDC00 {
+						return yaml_parser_set_reader_error(parser,
+							"expected low surrogate area",
+							parser.offset+2, int(value2))
+					}
+
+					// Generate the value of the surrogate pair.
+					value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF)
+				} else {
+					width = 2
+				}
+
+			default:
+				panic("impossible")
+			}
+
+			// Check if the character is in the allowed range:
+			//      #x9 | #xA | #xD | [#x20-#x7E]               (8 bit)
+			//      | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD]    (16 bit)
+			//      | [#x10000-#x10FFFF]                        (32 bit)
+			switch {
+			case value == 0x09:
+			case value == 0x0A:
+			case value == 0x0D:
+			case value >= 0x20 && value <= 0x7E:
+			case value == 0x85:
+			case value >= 0xA0 && value <= 0xD7FF:
+			case value >= 0xE000 && value <= 0xFFFD:
+			case value >= 0x10000 && value <= 0x10FFFF:
+			default:
+				return yaml_parser_set_reader_error(parser,
+					"control characters are not allowed",
+					parser.offset, int(value))
+			}
+
+			// Move the raw pointers.
+			parser.raw_buffer_pos += width
+			parser.offset += width
+
+			// Finally put the character into the buffer.
+			if value <= 0x7F {
+				// 0000 0000-0000 007F . 0xxxxxxx
+				parser.buffer[buffer_len+0] = byte(value)
+				buffer_len += 1
+			} else if value <= 0x7FF {
+				// 0000 0080-0000 07FF . 110xxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6))
+				parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F))
+				buffer_len += 2
+			} else if value <= 0xFFFF {
+				// 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F))
+				buffer_len += 3
+			} else {
+				// 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F))
+				buffer_len += 4
+			}
+
+			parser.unread++
+		}
+
+		// On EOF, put NUL into the buffer and return.
+		if parser.eof {
+			parser.buffer[buffer_len] = 0
+			buffer_len++
+			parser.unread++
+			break
+		}
+	}
+	parser.buffer = parser.buffer[:buffer_len]
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/resolve.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/resolve.go
new file mode 100644
index 00000000..232313cc
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/resolve.go
@@ -0,0 +1,208 @@
+package yaml
+
+import (
+	"encoding/base64"
+	"math"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+type resolveMapItem struct {
+	value interface{}
+	tag   string
+}
+
+var resolveTable = make([]byte, 256)
+var resolveMap = make(map[string]resolveMapItem)
+
+func init() {
+	t := resolveTable
+	t[int('+')] = 'S' // Sign
+	t[int('-')] = 'S'
+	for _, c := range "0123456789" {
+		t[int(c)] = 'D' // Digit
+	}
+	for _, c := range "yYnNtTfFoO~" {
+		t[int(c)] = 'M' // In map
+	}
+	t[int('.')] = '.' // Float (potentially in map)
+
+	var resolveMapList = []struct {
+		v   interface{}
+		tag string
+		l   []string
+	}{
+		{true, yaml_BOOL_TAG, []string{"y", "Y", "yes", "Yes", "YES"}},
+		{true, yaml_BOOL_TAG, []string{"true", "True", "TRUE"}},
+		{true, yaml_BOOL_TAG, []string{"on", "On", "ON"}},
+		{false, yaml_BOOL_TAG, []string{"n", "N", "no", "No", "NO"}},
+		{false, yaml_BOOL_TAG, []string{"false", "False", "FALSE"}},
+		{false, yaml_BOOL_TAG, []string{"off", "Off", "OFF"}},
+		{nil, yaml_NULL_TAG, []string{"", "~", "null", "Null", "NULL"}},
+		{math.NaN(), yaml_FLOAT_TAG, []string{".nan", ".NaN", ".NAN"}},
+		{math.Inf(+1), yaml_FLOAT_TAG, []string{".inf", ".Inf", ".INF"}},
+		{math.Inf(+1), yaml_FLOAT_TAG, []string{"+.inf", "+.Inf", "+.INF"}},
+		{math.Inf(-1), yaml_FLOAT_TAG, []string{"-.inf", "-.Inf", "-.INF"}},
+		{"<<", yaml_MERGE_TAG, []string{"<<"}},
+	}
+
+	m := resolveMap
+	for _, item := range resolveMapList {
+		for _, s := range item.l {
+			m[s] = resolveMapItem{item.v, item.tag}
+		}
+	}
+}
+
+const longTagPrefix = "tag:yaml.org,2002:"
+
+func shortTag(tag string) string {
+	// TODO This can easily be made faster and produce less garbage.
+	if strings.HasPrefix(tag, longTagPrefix) {
+		return "!!" + tag[len(longTagPrefix):]
+	}
+	return tag
+}
+
+func longTag(tag string) string {
+	if strings.HasPrefix(tag, "!!") {
+		return longTagPrefix + tag[2:]
+	}
+	return tag
+}
+
+func resolvableTag(tag string) bool {
+	switch tag {
+	case "", yaml_STR_TAG, yaml_BOOL_TAG, yaml_INT_TAG, yaml_FLOAT_TAG, yaml_NULL_TAG:
+		return true
+	}
+	return false
+}
+
+var yamlStyleFloat = regexp.MustCompile(`^[-+]?[0-9]*\.?[0-9]+([eE][-+][0-9]+)?$`)
+
+func resolve(tag string, in string) (rtag string, out interface{}) {
+	if !resolvableTag(tag) {
+		return tag, in
+	}
+
+	defer func() {
+		switch tag {
+		case "", rtag, yaml_STR_TAG, yaml_BINARY_TAG:
+			return
+		}
+		failf("cannot decode %s `%s` as a %s", shortTag(rtag), in, shortTag(tag))
+	}()
+
+	// Any data is accepted as a !!str or !!binary.
+	// Otherwise, the prefix is enough of a hint about what it might be.
+	hint := byte('N')
+	if in != "" {
+		hint = resolveTable[in[0]]
+	}
+	if hint != 0 && tag != yaml_STR_TAG && tag != yaml_BINARY_TAG {
+		// Handle things we can lookup in a map.
+		if item, ok := resolveMap[in]; ok {
+			return item.tag, item.value
+		}
+
+		// Base 60 floats are a bad idea, were dropped in YAML 1.2, and
+		// are purposefully unsupported here. They're still quoted on
+		// the way out for compatibility with other parser, though.
+
+		switch hint {
+		case 'M':
+			// We've already checked the map above.
+
+		case '.':
+			// Not in the map, so maybe a normal float.
+			floatv, err := strconv.ParseFloat(in, 64)
+			if err == nil {
+				return yaml_FLOAT_TAG, floatv
+			}
+
+		case 'D', 'S':
+			// Int, float, or timestamp.
+			plain := strings.Replace(in, "_", "", -1)
+			intv, err := strconv.ParseInt(plain, 0, 64)
+			if err == nil {
+				if intv == int64(int(intv)) {
+					return yaml_INT_TAG, int(intv)
+				} else {
+					return yaml_INT_TAG, intv
+				}
+			}
+			uintv, err := strconv.ParseUint(plain, 0, 64)
+			if err == nil {
+				return yaml_INT_TAG, uintv
+			}
+			if yamlStyleFloat.MatchString(plain) {
+				floatv, err := strconv.ParseFloat(plain, 64)
+				if err == nil {
+					return yaml_FLOAT_TAG, floatv
+				}
+			}
+			if strings.HasPrefix(plain, "0b") {
+				intv, err := strconv.ParseInt(plain[2:], 2, 64)
+				if err == nil {
+					if intv == int64(int(intv)) {
+						return yaml_INT_TAG, int(intv)
+					} else {
+						return yaml_INT_TAG, intv
+					}
+				}
+				uintv, err := strconv.ParseUint(plain[2:], 2, 64)
+				if err == nil {
+					return yaml_INT_TAG, uintv
+				}
+			} else if strings.HasPrefix(plain, "-0b") {
+				intv, err := strconv.ParseInt(plain[3:], 2, 64)
+				if err == nil {
+					if intv == int64(int(intv)) {
+						return yaml_INT_TAG, -int(intv)
+					} else {
+						return yaml_INT_TAG, -intv
+					}
+				}
+			}
+			// XXX Handle timestamps here.
+
+		default:
+			panic("resolveTable item not yet handled: " + string(rune(hint)) + " (with " + in + ")")
+		}
+	}
+	if tag == yaml_BINARY_TAG {
+		return yaml_BINARY_TAG, in
+	}
+	if utf8.ValidString(in) {
+		return yaml_STR_TAG, in
+	}
+	return yaml_BINARY_TAG, encodeBase64(in)
+}
+
+// encodeBase64 encodes s as base64 that is broken up into multiple lines
+// as appropriate for the resulting length.
+func encodeBase64(s string) string {
+	const lineLen = 70
+	encLen := base64.StdEncoding.EncodedLen(len(s))
+	lines := encLen/lineLen + 1
+	buf := make([]byte, encLen*2+lines)
+	in := buf[0:encLen]
+	out := buf[encLen:]
+	base64.StdEncoding.Encode(in, []byte(s))
+	k := 0
+	for i := 0; i < len(in); i += lineLen {
+		j := i + lineLen
+		if j > len(in) {
+			j = len(in)
+		}
+		k += copy(out[k:], in[i:j])
+		if lines > 1 {
+			out[k] = '\n'
+			k++
+		}
+	}
+	return string(out[:k])
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/scannerc.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/scannerc.go
new file mode 100644
index 00000000..07448445
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/scannerc.go
@@ -0,0 +1,2711 @@
+package yaml
+
+import (
+	"bytes"
+	"fmt"
+)
+
+// Introduction
+// ************
+//
+// The following notes assume that you are familiar with the YAML specification
+// (http://yaml.org/spec/1.2/spec.html).  We mostly follow it, although in
+// some cases we are less restrictive that it requires.
+//
+// The process of transforming a YAML stream into a sequence of events is
+// divided on two steps: Scanning and Parsing.
+//
+// The Scanner transforms the input stream into a sequence of tokens, while the
+// parser transform the sequence of tokens produced by the Scanner into a
+// sequence of parsing events.
+//
+// The Scanner is rather clever and complicated. The Parser, on the contrary,
+// is a straightforward implementation of a recursive-descendant parser (or,
+// LL(1) parser, as it is usually called).
+//
+// Actually there are two issues of Scanning that might be called "clever", the
+// rest is quite straightforward.  The issues are "block collection start" and
+// "simple keys".  Both issues are explained below in details.
+//
+// Here the Scanning step is explained and implemented.  We start with the list
+// of all the tokens produced by the Scanner together with short descriptions.
+//
+// Now, tokens:
+//
+//      STREAM-START(encoding)          # The stream start.
+//      STREAM-END                      # The stream end.
+//      VERSION-DIRECTIVE(major,minor)  # The '%YAML' directive.
+//      TAG-DIRECTIVE(handle,prefix)    # The '%TAG' directive.
+//      DOCUMENT-START                  # '---'
+//      DOCUMENT-END                    # '...'
+//      BLOCK-SEQUENCE-START            # Indentation increase denoting a block
+//      BLOCK-MAPPING-START             # sequence or a block mapping.
+//      BLOCK-END                       # Indentation decrease.
+//      FLOW-SEQUENCE-START             # '['
+//      FLOW-SEQUENCE-END               # ']'
+//      BLOCK-SEQUENCE-START            # '{'
+//      BLOCK-SEQUENCE-END              # '}'
+//      BLOCK-ENTRY                     # '-'
+//      FLOW-ENTRY                      # ','
+//      KEY                             # '?' or nothing (simple keys).
+//      VALUE                           # ':'
+//      ALIAS(anchor)                   # '*anchor'
+//      ANCHOR(anchor)                  # '&anchor'
+//      TAG(handle,suffix)              # '!handle!suffix'
+//      SCALAR(value,style)             # A scalar.
+//
+// The following two tokens are "virtual" tokens denoting the beginning and the
+// end of the stream:
+//
+//      STREAM-START(encoding)
+//      STREAM-END
+//
+// We pass the information about the input stream encoding with the
+// STREAM-START token.
+//
+// The next two tokens are responsible for tags:
+//
+//      VERSION-DIRECTIVE(major,minor)
+//      TAG-DIRECTIVE(handle,prefix)
+//
+// Example:
+//
+//      %YAML   1.1
+//      %TAG    !   !foo
+//      %TAG    !yaml!  tag:yaml.org,2002:
+//      ---
+//
+// The correspoding sequence of tokens:
+//
+//      STREAM-START(utf-8)
+//      VERSION-DIRECTIVE(1,1)
+//      TAG-DIRECTIVE("!","!foo")
+//      TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:")
+//      DOCUMENT-START
+//      STREAM-END
+//
+// Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole
+// line.
+//
+// The document start and end indicators are represented by:
+//
+//      DOCUMENT-START
+//      DOCUMENT-END
+//
+// Note that if a YAML stream contains an implicit document (without '---'
+// and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be
+// produced.
+//
+// In the following examples, we present whole documents together with the
+// produced tokens.
+//
+//      1. An implicit document:
+//
+//          'a scalar'
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          SCALAR("a scalar",single-quoted)
+//          STREAM-END
+//
+//      2. An explicit document:
+//
+//          ---
+//          'a scalar'
+//          ...
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          DOCUMENT-START
+//          SCALAR("a scalar",single-quoted)
+//          DOCUMENT-END
+//          STREAM-END
+//
+//      3. Several documents in a stream:
+//
+//          'a scalar'
+//          ---
+//          'another scalar'
+//          ---
+//          'yet another scalar'
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          SCALAR("a scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("another scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("yet another scalar",single-quoted)
+//          STREAM-END
+//
+// We have already introduced the SCALAR token above.  The following tokens are
+// used to describe aliases, anchors, tag, and scalars:
+//
+//      ALIAS(anchor)
+//      ANCHOR(anchor)
+//      TAG(handle,suffix)
+//      SCALAR(value,style)
+//
+// The following series of examples illustrate the usage of these tokens:
+//
+//      1. A recursive sequence:
+//
+//          &A [ *A ]
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          ANCHOR("A")
+//          FLOW-SEQUENCE-START
+//          ALIAS("A")
+//          FLOW-SEQUENCE-END
+//          STREAM-END
+//
+//      2. A tagged scalar:
+//
+//          !!float "3.14"  # A good approximation.
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          TAG("!!","float")
+//          SCALAR("3.14",double-quoted)
+//          STREAM-END
+//
+//      3. Various scalar styles:
+//
+//          --- # Implicit empty plain scalars do not produce tokens.
+//          --- a plain scalar
+//          --- 'a single-quoted scalar'
+//          --- "a double-quoted scalar"
+//          --- |-
+//            a literal scalar
+//          --- >-
+//            a folded
+//            scalar
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          DOCUMENT-START
+//          DOCUMENT-START
+//          SCALAR("a plain scalar",plain)
+//          DOCUMENT-START
+//          SCALAR("a single-quoted scalar",single-quoted)
+//          DOCUMENT-START
+//          SCALAR("a double-quoted scalar",double-quoted)
+//          DOCUMENT-START
+//          SCALAR("a literal scalar",literal)
+//          DOCUMENT-START
+//          SCALAR("a folded scalar",folded)
+//          STREAM-END
+//
+// Now it's time to review collection-related tokens. We will start with
+// flow collections:
+//
+//      FLOW-SEQUENCE-START
+//      FLOW-SEQUENCE-END
+//      FLOW-MAPPING-START
+//      FLOW-MAPPING-END
+//      FLOW-ENTRY
+//      KEY
+//      VALUE
+//
+// The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and
+// FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}'
+// correspondingly.  FLOW-ENTRY represent the ',' indicator.  Finally the
+// indicators '?' and ':', which are used for denoting mapping keys and values,
+// are represented by the KEY and VALUE tokens.
+//
+// The following examples show flow collections:
+//
+//      1. A flow sequence:
+//
+//          [item 1, item 2, item 3]
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          FLOW-SEQUENCE-START
+//          SCALAR("item 1",plain)
+//          FLOW-ENTRY
+//          SCALAR("item 2",plain)
+//          FLOW-ENTRY
+//          SCALAR("item 3",plain)
+//          FLOW-SEQUENCE-END
+//          STREAM-END
+//
+//      2. A flow mapping:
+//
+//          {
+//              a simple key: a value,  # Note that the KEY token is produced.
+//              ? a complex key: another value,
+//          }
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          FLOW-MAPPING-START
+//          KEY
+//          SCALAR("a simple key",plain)
+//          VALUE
+//          SCALAR("a value",plain)
+//          FLOW-ENTRY
+//          KEY
+//          SCALAR("a complex key",plain)
+//          VALUE
+//          SCALAR("another value",plain)
+//          FLOW-ENTRY
+//          FLOW-MAPPING-END
+//          STREAM-END
+//
+// A simple key is a key which is not denoted by the '?' indicator.  Note that
+// the Scanner still produce the KEY token whenever it encounters a simple key.
+//
+// For scanning block collections, the following tokens are used (note that we
+// repeat KEY and VALUE here):
+//
+//      BLOCK-SEQUENCE-START
+//      BLOCK-MAPPING-START
+//      BLOCK-END
+//      BLOCK-ENTRY
+//      KEY
+//      VALUE
+//
+// The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation
+// increase that precedes a block collection (cf. the INDENT token in Python).
+// The token BLOCK-END denote indentation decrease that ends a block collection
+// (cf. the DEDENT token in Python).  However YAML has some syntax pecularities
+// that makes detections of these tokens more complex.
+//
+// The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators
+// '-', '?', and ':' correspondingly.
+//
+// The following examples show how the tokens BLOCK-SEQUENCE-START,
+// BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner:
+//
+//      1. Block sequences:
+//
+//          - item 1
+//          - item 2
+//          -
+//            - item 3.1
+//            - item 3.2
+//          -
+//            key 1: value 1
+//            key 2: value 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-ENTRY
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 3.1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 3.2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+//      2. Block mappings:
+//
+//          a simple key: a value   # The KEY token is produced here.
+//          ? a complex key
+//          : another value
+//          a mapping:
+//            key 1: value 1
+//            key 2: value 2
+//          a sequence:
+//            - item 1
+//            - item 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("a simple key",plain)
+//          VALUE
+//          SCALAR("a value",plain)
+//          KEY
+//          SCALAR("a complex key",plain)
+//          VALUE
+//          SCALAR("another value",plain)
+//          KEY
+//          SCALAR("a mapping",plain)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          KEY
+//          SCALAR("a sequence",plain)
+//          VALUE
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+// YAML does not always require to start a new block collection from a new
+// line.  If the current line contains only '-', '?', and ':' indicators, a new
+// block collection may start at the current line.  The following examples
+// illustrate this case:
+//
+//      1. Collections in a sequence:
+//
+//          - - item 1
+//            - item 2
+//          - key 1: value 1
+//            key 2: value 2
+//          - ? complex key
+//            : complex value
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-ENTRY
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("complex key")
+//          VALUE
+//          SCALAR("complex value")
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+//      2. Collections in a mapping:
+//
+//          ? a sequence
+//          : - item 1
+//            - item 2
+//          ? a mapping
+//          : key 1: value 1
+//            key 2: value 2
+//
+//      Tokens:
+//
+//          STREAM-START(utf-8)
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("a sequence",plain)
+//          VALUE
+//          BLOCK-SEQUENCE-START
+//          BLOCK-ENTRY
+//          SCALAR("item 1",plain)
+//          BLOCK-ENTRY
+//          SCALAR("item 2",plain)
+//          BLOCK-END
+//          KEY
+//          SCALAR("a mapping",plain)
+//          VALUE
+//          BLOCK-MAPPING-START
+//          KEY
+//          SCALAR("key 1",plain)
+//          VALUE
+//          SCALAR("value 1",plain)
+//          KEY
+//          SCALAR("key 2",plain)
+//          VALUE
+//          SCALAR("value 2",plain)
+//          BLOCK-END
+//          BLOCK-END
+//          STREAM-END
+//
+// YAML also permits non-indented sequences if they are included into a block
+// mapping.  In this case, the token BLOCK-SEQUENCE-START is not produced:
+//
+//      key:
+//      - item 1    # BLOCK-SEQUENCE-START is NOT produced here.
+//      - item 2
+//
+// Tokens:
+//
+//      STREAM-START(utf-8)
+//      BLOCK-MAPPING-START
+//      KEY
+//      SCALAR("key",plain)
+//      VALUE
+//      BLOCK-ENTRY
+//      SCALAR("item 1",plain)
+//      BLOCK-ENTRY
+//      SCALAR("item 2",plain)
+//      BLOCK-END
+//
+
+// Ensure that the buffer contains the required number of characters.
+// Return true on success, false on failure (reader error or memory error).
+func cache(parser *yaml_parser_t, length int) bool {
+	// [Go] This was inlined: !cache(A, B) -> unread < B && !update(A, B)
+	return parser.unread >= length || yaml_parser_update_buffer(parser, length)
+}
+
+// Advance the buffer pointer.
+func skip(parser *yaml_parser_t) {
+	parser.mark.index++
+	parser.mark.column++
+	parser.unread--
+	parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+}
+
+func skip_line(parser *yaml_parser_t) {
+	if is_crlf(parser.buffer, parser.buffer_pos) {
+		parser.mark.index += 2
+		parser.mark.column = 0
+		parser.mark.line++
+		parser.unread -= 2
+		parser.buffer_pos += 2
+	} else if is_break(parser.buffer, parser.buffer_pos) {
+		parser.mark.index++
+		parser.mark.column = 0
+		parser.mark.line++
+		parser.unread--
+		parser.buffer_pos += width(parser.buffer[parser.buffer_pos])
+	}
+}
+
+// Copy a character to a string buffer and advance pointers.
+func read(parser *yaml_parser_t, s []byte) []byte {
+	w := width(parser.buffer[parser.buffer_pos])
+	if w == 0 {
+		panic("invalid character sequence")
+	}
+	if len(s) == 0 {
+		s = make([]byte, 0, 32)
+	}
+	if w == 1 && len(s)+w <= cap(s) {
+		s = s[:len(s)+1]
+		s[len(s)-1] = parser.buffer[parser.buffer_pos]
+		parser.buffer_pos++
+	} else {
+		s = append(s, parser.buffer[parser.buffer_pos:parser.buffer_pos+w]...)
+		parser.buffer_pos += w
+	}
+	parser.mark.index++
+	parser.mark.column++
+	parser.unread--
+	return s
+}
+
+// Copy a line break character to a string buffer and advance pointers.
+func read_line(parser *yaml_parser_t, s []byte) []byte {
+	buf := parser.buffer
+	pos := parser.buffer_pos
+	switch {
+	case buf[pos] == '\r' && buf[pos+1] == '\n':
+		// CR LF . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 2
+		parser.mark.index++
+		parser.unread--
+	case buf[pos] == '\r' || buf[pos] == '\n':
+		// CR|LF . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 1
+	case buf[pos] == '\xC2' && buf[pos+1] == '\x85':
+		// NEL . LF
+		s = append(s, '\n')
+		parser.buffer_pos += 2
+	case buf[pos] == '\xE2' && buf[pos+1] == '\x80' && (buf[pos+2] == '\xA8' || buf[pos+2] == '\xA9'):
+		// LS|PS . LS|PS
+		s = append(s, buf[parser.buffer_pos:pos+3]...)
+		parser.buffer_pos += 3
+	default:
+		return s
+	}
+	parser.mark.index++
+	parser.mark.column = 0
+	parser.mark.line++
+	parser.unread--
+	return s
+}
+
+// Get the next token.
+func yaml_parser_scan(parser *yaml_parser_t, token *yaml_token_t) bool {
+	// Erase the token object.
+	*token = yaml_token_t{} // [Go] Is this necessary?
+
+	// No tokens after STREAM-END or error.
+	if parser.stream_end_produced || parser.error != yaml_NO_ERROR {
+		return true
+	}
+
+	// Ensure that the tokens queue contains enough tokens.
+	if !parser.token_available {
+		if !yaml_parser_fetch_more_tokens(parser) {
+			return false
+		}
+	}
+
+	// Fetch the next token from the queue.
+	*token = parser.tokens[parser.tokens_head]
+	parser.tokens_head++
+	parser.tokens_parsed++
+	parser.token_available = false
+
+	if token.typ == yaml_STREAM_END_TOKEN {
+		parser.stream_end_produced = true
+	}
+	return true
+}
+
+// Set the scanner error and return false.
+func yaml_parser_set_scanner_error(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string) bool {
+	parser.error = yaml_SCANNER_ERROR
+	parser.context = context
+	parser.context_mark = context_mark
+	parser.problem = problem
+	parser.problem_mark = parser.mark
+	return false
+}
+
+func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, context_mark yaml_mark_t, problem string) bool {
+	context := "while parsing a tag"
+	if directive {
+		context = "while parsing a %TAG directive"
+	}
+	return yaml_parser_set_scanner_error(parser, context, context_mark, problem)
+}
+
+func trace(args ...interface{}) func() {
+	pargs := append([]interface{}{"+++"}, args...)
+	fmt.Println(pargs...)
+	pargs = append([]interface{}{"---"}, args...)
+	return func() { fmt.Println(pargs...) }
+}
+
+// Ensure that the tokens queue contains at least one token which can be
+// returned to the Parser.
+func yaml_parser_fetch_more_tokens(parser *yaml_parser_t) bool {
+	// While we need more tokens to fetch, do it.
+	for {
+		// Check if we really need to fetch more tokens.
+		need_more_tokens := false
+
+		if parser.tokens_head == len(parser.tokens) {
+			// Queue is empty.
+			need_more_tokens = true
+		} else {
+			// Check if any potential simple key may occupy the head position.
+			if !yaml_parser_stale_simple_keys(parser) {
+				return false
+			}
+
+			for i := range parser.simple_keys {
+				simple_key := &parser.simple_keys[i]
+				if simple_key.possible && simple_key.token_number == parser.tokens_parsed {
+					need_more_tokens = true
+					break
+				}
+			}
+		}
+
+		// We are finished.
+		if !need_more_tokens {
+			break
+		}
+		// Fetch the next token.
+		if !yaml_parser_fetch_next_token(parser) {
+			return false
+		}
+	}
+
+	parser.token_available = true
+	return true
+}
+
+// The dispatcher for token fetchers.
+func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool {
+	// Ensure that the buffer is initialized.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// Check if we just started scanning.  Fetch STREAM-START then.
+	if !parser.stream_start_produced {
+		return yaml_parser_fetch_stream_start(parser)
+	}
+
+	// Eat whitespaces and comments until we reach the next token.
+	if !yaml_parser_scan_to_next_token(parser) {
+		return false
+	}
+
+	// Remove obsolete potential simple keys.
+	if !yaml_parser_stale_simple_keys(parser) {
+		return false
+	}
+
+	// Check the indentation level against the current column.
+	if !yaml_parser_unroll_indent(parser, parser.mark.column) {
+		return false
+	}
+
+	// Ensure that the buffer contains at least 4 characters.  4 is the length
+	// of the longest indicators ('--- ' and '... ').
+	if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+		return false
+	}
+
+	// Is it the end of the stream?
+	if is_z(parser.buffer, parser.buffer_pos) {
+		return yaml_parser_fetch_stream_end(parser)
+	}
+
+	// Is it a directive?
+	if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' {
+		return yaml_parser_fetch_directive(parser)
+	}
+
+	buf := parser.buffer
+	pos := parser.buffer_pos
+
+	// Is it the document start indicator?
+	if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) {
+		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN)
+	}
+
+	// Is it the document end indicator?
+	if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) {
+		return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN)
+	}
+
+	// Is it the flow sequence start indicator?
+	if buf[pos] == '[' {
+		return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_SEQUENCE_START_TOKEN)
+	}
+
+	// Is it the flow mapping start indicator?
+	if parser.buffer[parser.buffer_pos] == '{' {
+		return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_MAPPING_START_TOKEN)
+	}
+
+	// Is it the flow sequence end indicator?
+	if parser.buffer[parser.buffer_pos] == ']' {
+		return yaml_parser_fetch_flow_collection_end(parser,
+			yaml_FLOW_SEQUENCE_END_TOKEN)
+	}
+
+	// Is it the flow mapping end indicator?
+	if parser.buffer[parser.buffer_pos] == '}' {
+		return yaml_parser_fetch_flow_collection_end(parser,
+			yaml_FLOW_MAPPING_END_TOKEN)
+	}
+
+	// Is it the flow entry indicator?
+	if parser.buffer[parser.buffer_pos] == ',' {
+		return yaml_parser_fetch_flow_entry(parser)
+	}
+
+	// Is it the block entry indicator?
+	if parser.buffer[parser.buffer_pos] == '-' && is_blankz(parser.buffer, parser.buffer_pos+1) {
+		return yaml_parser_fetch_block_entry(parser)
+	}
+
+	// Is it the key indicator?
+	if parser.buffer[parser.buffer_pos] == '?' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_key(parser)
+	}
+
+	// Is it the value indicator?
+	if parser.buffer[parser.buffer_pos] == ':' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_value(parser)
+	}
+
+	// Is it an alias?
+	if parser.buffer[parser.buffer_pos] == '*' {
+		return yaml_parser_fetch_anchor(parser, yaml_ALIAS_TOKEN)
+	}
+
+	// Is it an anchor?
+	if parser.buffer[parser.buffer_pos] == '&' {
+		return yaml_parser_fetch_anchor(parser, yaml_ANCHOR_TOKEN)
+	}
+
+	// Is it a tag?
+	if parser.buffer[parser.buffer_pos] == '!' {
+		return yaml_parser_fetch_tag(parser)
+	}
+
+	// Is it a literal scalar?
+	if parser.buffer[parser.buffer_pos] == '|' && parser.flow_level == 0 {
+		return yaml_parser_fetch_block_scalar(parser, true)
+	}
+
+	// Is it a folded scalar?
+	if parser.buffer[parser.buffer_pos] == '>' && parser.flow_level == 0 {
+		return yaml_parser_fetch_block_scalar(parser, false)
+	}
+
+	// Is it a single-quoted scalar?
+	if parser.buffer[parser.buffer_pos] == '\'' {
+		return yaml_parser_fetch_flow_scalar(parser, true)
+	}
+
+	// Is it a double-quoted scalar?
+	if parser.buffer[parser.buffer_pos] == '"' {
+		return yaml_parser_fetch_flow_scalar(parser, false)
+	}
+
+	// Is it a plain scalar?
+	//
+	// A plain scalar may start with any non-blank characters except
+	//
+	//      '-', '?', ':', ',', '[', ']', '{', '}',
+	//      '#', '&', '*', '!', '|', '>', '\'', '\"',
+	//      '%', '@', '`'.
+	//
+	// In the block context (and, for the '-' indicator, in the flow context
+	// too), it may also start with the characters
+	//
+	//      '-', '?', ':'
+	//
+	// if it is followed by a non-space character.
+	//
+	// The last rule is more restrictive than the specification requires.
+	// [Go] Make this logic more reasonable.
+	//switch parser.buffer[parser.buffer_pos] {
+	//case '-', '?', ':', ',', '?', '-', ',', ':', ']', '[', '}', '{', '&', '#', '!', '*', '>', '|', '"', '\'', '@', '%', '-', '`':
+	//}
+	if !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '-' ||
+		parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':' ||
+		parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '[' ||
+		parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+		parser.buffer[parser.buffer_pos] == '}' || parser.buffer[parser.buffer_pos] == '#' ||
+		parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '*' ||
+		parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '|' ||
+		parser.buffer[parser.buffer_pos] == '>' || parser.buffer[parser.buffer_pos] == '\'' ||
+		parser.buffer[parser.buffer_pos] == '"' || parser.buffer[parser.buffer_pos] == '%' ||
+		parser.buffer[parser.buffer_pos] == '@' || parser.buffer[parser.buffer_pos] == '`') ||
+		(parser.buffer[parser.buffer_pos] == '-' && !is_blank(parser.buffer, parser.buffer_pos+1)) ||
+		(parser.flow_level == 0 &&
+			(parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':') &&
+			!is_blankz(parser.buffer, parser.buffer_pos+1)) {
+		return yaml_parser_fetch_plain_scalar(parser)
+	}
+
+	// If we don't determine the token type so far, it is an error.
+	return yaml_parser_set_scanner_error(parser,
+		"while scanning for the next token", parser.mark,
+		"found character that cannot start any token")
+}
+
+// Check the list of potential simple keys and remove the positions that
+// cannot contain simple keys anymore.
+func yaml_parser_stale_simple_keys(parser *yaml_parser_t) bool {
+	// Check for a potential simple key for each flow level.
+	for i := range parser.simple_keys {
+		simple_key := &parser.simple_keys[i]
+
+		// The specification requires that a simple key
+		//
+		//  - is limited to a single line,
+		//  - is shorter than 1024 characters.
+		if simple_key.possible && (simple_key.mark.line < parser.mark.line || simple_key.mark.index+1024 < parser.mark.index) {
+
+			// Check if the potential simple key to be removed is required.
+			if simple_key.required {
+				return yaml_parser_set_scanner_error(parser,
+					"while scanning a simple key", simple_key.mark,
+					"could not find expected ':'")
+			}
+			simple_key.possible = false
+		}
+	}
+	return true
+}
+
+// Check if a simple key may start at the current position and add it if
+// needed.
+func yaml_parser_save_simple_key(parser *yaml_parser_t) bool {
+	// A simple key is required at the current position if the scanner is in
+	// the block context and the current column coincides with the indentation
+	// level.
+
+	required := parser.flow_level == 0 && parser.indent == parser.mark.column
+
+	// A simple key is required only when it is the first token in the current
+	// line.  Therefore it is always allowed.  But we add a check anyway.
+	if required && !parser.simple_key_allowed {
+		panic("should not happen")
+	}
+
+	//
+	// If the current position may start a simple key, save it.
+	//
+	if parser.simple_key_allowed {
+		simple_key := yaml_simple_key_t{
+			possible:     true,
+			required:     required,
+			token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head),
+		}
+		simple_key.mark = parser.mark
+
+		if !yaml_parser_remove_simple_key(parser) {
+			return false
+		}
+		parser.simple_keys[len(parser.simple_keys)-1] = simple_key
+	}
+	return true
+}
+
+// Remove a potential simple key at the current flow level.
+func yaml_parser_remove_simple_key(parser *yaml_parser_t) bool {
+	i := len(parser.simple_keys) - 1
+	if parser.simple_keys[i].possible {
+		// If the key is required, it is an error.
+		if parser.simple_keys[i].required {
+			return yaml_parser_set_scanner_error(parser,
+				"while scanning a simple key", parser.simple_keys[i].mark,
+				"could not find expected ':'")
+		}
+	}
+	// Remove the key from the stack.
+	parser.simple_keys[i].possible = false
+	return true
+}
+
+// Increase the flow level and resize the simple key list if needed.
+func yaml_parser_increase_flow_level(parser *yaml_parser_t) bool {
+	// Reset the simple key on the next level.
+	parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+	// Increase the flow level.
+	parser.flow_level++
+	return true
+}
+
+// Decrease the flow level.
+func yaml_parser_decrease_flow_level(parser *yaml_parser_t) bool {
+	if parser.flow_level > 0 {
+		parser.flow_level--
+		parser.simple_keys = parser.simple_keys[:len(parser.simple_keys)-1]
+	}
+	return true
+}
+
+// Push the current indentation level to the stack and set the new level
+// the current column is greater than the indentation level.  In this case,
+// append or insert the specified token into the token queue.
+func yaml_parser_roll_indent(parser *yaml_parser_t, column, number int, typ yaml_token_type_t, mark yaml_mark_t) bool {
+	// In the flow context, do nothing.
+	if parser.flow_level > 0 {
+		return true
+	}
+
+	if parser.indent < column {
+		// Push the current indentation level to the stack and set the new
+		// indentation level.
+		parser.indents = append(parser.indents, parser.indent)
+		parser.indent = column
+
+		// Create a token and insert it into the queue.
+		token := yaml_token_t{
+			typ:        typ,
+			start_mark: mark,
+			end_mark:   mark,
+		}
+		if number > -1 {
+			number -= parser.tokens_parsed
+		}
+		yaml_insert_token(parser, number, &token)
+	}
+	return true
+}
+
+// Pop indentation levels from the indents stack until the current level
+// becomes less or equal to the column.  For each indentation level, append
+// the BLOCK-END token.
+func yaml_parser_unroll_indent(parser *yaml_parser_t, column int) bool {
+	// In the flow context, do nothing.
+	if parser.flow_level > 0 {
+		return true
+	}
+
+	// Loop through the indentation levels in the stack.
+	for parser.indent > column {
+		// Create a token and append it to the queue.
+		token := yaml_token_t{
+			typ:        yaml_BLOCK_END_TOKEN,
+			start_mark: parser.mark,
+			end_mark:   parser.mark,
+		}
+		yaml_insert_token(parser, -1, &token)
+
+		// Pop the indentation level.
+		parser.indent = parser.indents[len(parser.indents)-1]
+		parser.indents = parser.indents[:len(parser.indents)-1]
+	}
+	return true
+}
+
+// Initialize the scanner and produce the STREAM-START token.
+func yaml_parser_fetch_stream_start(parser *yaml_parser_t) bool {
+
+	// Set the initial indentation.
+	parser.indent = -1
+
+	// Initialize the simple key stack.
+	parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{})
+
+	// A simple key is allowed at the beginning of the stream.
+	parser.simple_key_allowed = true
+
+	// We have started.
+	parser.stream_start_produced = true
+
+	// Create the STREAM-START token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_STREAM_START_TOKEN,
+		start_mark: parser.mark,
+		end_mark:   parser.mark,
+		encoding:   parser.encoding,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the STREAM-END token and shut down the scanner.
+func yaml_parser_fetch_stream_end(parser *yaml_parser_t) bool {
+
+	// Force new line.
+	if parser.mark.column != 0 {
+		parser.mark.column = 0
+		parser.mark.line++
+	}
+
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Create the STREAM-END token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_STREAM_END_TOKEN,
+		start_mark: parser.mark,
+		end_mark:   parser.mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token.
+func yaml_parser_fetch_directive(parser *yaml_parser_t) bool {
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Create the YAML-DIRECTIVE or TAG-DIRECTIVE token.
+	token := yaml_token_t{}
+	if !yaml_parser_scan_directive(parser, &token) {
+		return false
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the DOCUMENT-START or DOCUMENT-END token.
+func yaml_parser_fetch_document_indicator(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// Reset the indentation level.
+	if !yaml_parser_unroll_indent(parser, -1) {
+		return false
+	}
+
+	// Reset simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	parser.simple_key_allowed = false
+
+	// Consume the token.
+	start_mark := parser.mark
+
+	skip(parser)
+	skip(parser)
+	skip(parser)
+
+	end_mark := parser.mark
+
+	// Create the DOCUMENT-START or DOCUMENT-END token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token.
+func yaml_parser_fetch_flow_collection_start(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// The indicators '[' and '{' may start a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// Increase the flow level.
+	if !yaml_parser_increase_flow_level(parser) {
+		return false
+	}
+
+	// A simple key may follow the indicators '[' and '{'.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token.
+func yaml_parser_fetch_flow_collection_end(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// Reset any potential simple key on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Decrease the flow level.
+	if !yaml_parser_decrease_flow_level(parser) {
+		return false
+	}
+
+	// No simple keys after the indicators ']' and '}'.
+	parser.simple_key_allowed = false
+
+	// Consume the token.
+
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token.
+	token := yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	// Append the token to the queue.
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the FLOW-ENTRY token.
+func yaml_parser_fetch_flow_entry(parser *yaml_parser_t) bool {
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after ','.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the FLOW-ENTRY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_FLOW_ENTRY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the BLOCK-ENTRY token.
+func yaml_parser_fetch_block_entry(parser *yaml_parser_t) bool {
+	// Check if the scanner is in the block context.
+	if parser.flow_level == 0 {
+		// Check if we are allowed to start a new entry.
+		if !parser.simple_key_allowed {
+			return yaml_parser_set_scanner_error(parser, "", parser.mark,
+				"block sequence entries are not allowed in this context")
+		}
+		// Add the BLOCK-SEQUENCE-START token if needed.
+		if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_SEQUENCE_START_TOKEN, parser.mark) {
+			return false
+		}
+	} else {
+		// It is an error for the '-' indicator to occur in the flow context,
+		// but we let the Parser detect and report about it because the Parser
+		// is able to point to the context.
+	}
+
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after '-'.
+	parser.simple_key_allowed = true
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the BLOCK-ENTRY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_BLOCK_ENTRY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the KEY token.
+func yaml_parser_fetch_key(parser *yaml_parser_t) bool {
+
+	// In the block context, additional checks are required.
+	if parser.flow_level == 0 {
+		// Check if we are allowed to start a new key (not nessesary simple).
+		if !parser.simple_key_allowed {
+			return yaml_parser_set_scanner_error(parser, "", parser.mark,
+				"mapping keys are not allowed in this context")
+		}
+		// Add the BLOCK-MAPPING-START token if needed.
+		if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+			return false
+		}
+	}
+
+	// Reset any potential simple keys on the current flow level.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// Simple keys are allowed after '?' in the block context.
+	parser.simple_key_allowed = parser.flow_level == 0
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the KEY token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_KEY_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the VALUE token.
+func yaml_parser_fetch_value(parser *yaml_parser_t) bool {
+
+	simple_key := &parser.simple_keys[len(parser.simple_keys)-1]
+
+	// Have we found a simple key?
+	if simple_key.possible {
+		// Create the KEY token and insert it into the queue.
+		token := yaml_token_t{
+			typ:        yaml_KEY_TOKEN,
+			start_mark: simple_key.mark,
+			end_mark:   simple_key.mark,
+		}
+		yaml_insert_token(parser, simple_key.token_number-parser.tokens_parsed, &token)
+
+		// In the block context, we may need to add the BLOCK-MAPPING-START token.
+		if !yaml_parser_roll_indent(parser, simple_key.mark.column,
+			simple_key.token_number,
+			yaml_BLOCK_MAPPING_START_TOKEN, simple_key.mark) {
+			return false
+		}
+
+		// Remove the simple key.
+		simple_key.possible = false
+
+		// A simple key cannot follow another simple key.
+		parser.simple_key_allowed = false
+
+	} else {
+		// The ':' indicator follows a complex key.
+
+		// In the block context, extra checks are required.
+		if parser.flow_level == 0 {
+
+			// Check if we are allowed to start a complex value.
+			if !parser.simple_key_allowed {
+				return yaml_parser_set_scanner_error(parser, "", parser.mark,
+					"mapping values are not allowed in this context")
+			}
+
+			// Add the BLOCK-MAPPING-START token if needed.
+			if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) {
+				return false
+			}
+		}
+
+		// Simple keys after ':' are allowed in the block context.
+		parser.simple_key_allowed = parser.flow_level == 0
+	}
+
+	// Consume the token.
+	start_mark := parser.mark
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create the VALUE token and append it to the queue.
+	token := yaml_token_t{
+		typ:        yaml_VALUE_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the ALIAS or ANCHOR token.
+func yaml_parser_fetch_anchor(parser *yaml_parser_t, typ yaml_token_type_t) bool {
+	// An anchor or an alias could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow an anchor or an alias.
+	parser.simple_key_allowed = false
+
+	// Create the ALIAS or ANCHOR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_anchor(parser, &token, typ) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the TAG token.
+func yaml_parser_fetch_tag(parser *yaml_parser_t) bool {
+	// A tag could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a tag.
+	parser.simple_key_allowed = false
+
+	// Create the TAG token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_tag(parser, &token) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens.
+func yaml_parser_fetch_block_scalar(parser *yaml_parser_t, literal bool) bool {
+	// Remove any potential simple keys.
+	if !yaml_parser_remove_simple_key(parser) {
+		return false
+	}
+
+	// A simple key may follow a block scalar.
+	parser.simple_key_allowed = true
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_block_scalar(parser, &token, literal) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens.
+func yaml_parser_fetch_flow_scalar(parser *yaml_parser_t, single bool) bool {
+	// A plain scalar could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a flow scalar.
+	parser.simple_key_allowed = false
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_flow_scalar(parser, &token, single) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Produce the SCALAR(...,plain) token.
+func yaml_parser_fetch_plain_scalar(parser *yaml_parser_t) bool {
+	// A plain scalar could be a simple key.
+	if !yaml_parser_save_simple_key(parser) {
+		return false
+	}
+
+	// A simple key cannot follow a flow scalar.
+	parser.simple_key_allowed = false
+
+	// Create the SCALAR token and append it to the queue.
+	var token yaml_token_t
+	if !yaml_parser_scan_plain_scalar(parser, &token) {
+		return false
+	}
+	yaml_insert_token(parser, -1, &token)
+	return true
+}
+
+// Eat whitespaces and comments until the next token is found.
+func yaml_parser_scan_to_next_token(parser *yaml_parser_t) bool {
+
+	// Until the next token is not found.
+	for {
+		// Allow the BOM mark to start a line.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if parser.mark.column == 0 && is_bom(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+		}
+
+		// Eat whitespaces.
+		// Tabs are allowed:
+		//  - in the flow context
+		//  - in the block context, but not at the beginning of the line or
+		//  after '-', '?', or ':' (complex value).
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for parser.buffer[parser.buffer_pos] == ' ' || ((parser.flow_level > 0 || !parser.simple_key_allowed) && parser.buffer[parser.buffer_pos] == '\t') {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Eat a comment until a line break.
+		if parser.buffer[parser.buffer_pos] == '#' {
+			for !is_breakz(parser.buffer, parser.buffer_pos) {
+				skip(parser)
+				if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+					return false
+				}
+			}
+		}
+
+		// If it is a line break, eat it.
+		if is_break(parser.buffer, parser.buffer_pos) {
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+			skip_line(parser)
+
+			// In the block context, a new line may start a simple key.
+			if parser.flow_level == 0 {
+				parser.simple_key_allowed = true
+			}
+		} else {
+			break // We have found a token.
+		}
+	}
+
+	return true
+}
+
+// Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token.
+//
+// Scope:
+//      %YAML    1.1    # a comment \n
+//      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_directive(parser *yaml_parser_t, token *yaml_token_t) bool {
+	// Eat '%'.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Scan the directive name.
+	var name []byte
+	if !yaml_parser_scan_directive_name(parser, start_mark, &name) {
+		return false
+	}
+
+	// Is it a YAML directive?
+	if bytes.Equal(name, []byte("YAML")) {
+		// Scan the VERSION directive value.
+		var major, minor int8
+		if !yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor) {
+			return false
+		}
+		end_mark := parser.mark
+
+		// Create a VERSION-DIRECTIVE token.
+		*token = yaml_token_t{
+			typ:        yaml_VERSION_DIRECTIVE_TOKEN,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			major:      major,
+			minor:      minor,
+		}
+
+		// Is it a TAG directive?
+	} else if bytes.Equal(name, []byte("TAG")) {
+		// Scan the TAG directive value.
+		var handle, prefix []byte
+		if !yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix) {
+			return false
+		}
+		end_mark := parser.mark
+
+		// Create a TAG-DIRECTIVE token.
+		*token = yaml_token_t{
+			typ:        yaml_TAG_DIRECTIVE_TOKEN,
+			start_mark: start_mark,
+			end_mark:   end_mark,
+			value:      handle,
+			prefix:     prefix,
+		}
+
+		// Unknown directive.
+	} else {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "found unknown directive name")
+		return false
+	}
+
+	// Eat the rest of the line including any comments.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	if parser.buffer[parser.buffer_pos] == '#' {
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+	}
+
+	// Check if we are at the end of the line.
+	if !is_breakz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "did not find expected comment or line break")
+		return false
+	}
+
+	// Eat a line break.
+	if is_break(parser.buffer, parser.buffer_pos) {
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		skip_line(parser)
+	}
+
+	return true
+}
+
+// Scan the directive name.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//       ^^^^
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//       ^^^
+//
+func yaml_parser_scan_directive_name(parser *yaml_parser_t, start_mark yaml_mark_t, name *[]byte) bool {
+	// Consume the directive name.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	var s []byte
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the name is empty.
+	if len(s) == 0 {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "could not find expected directive name")
+		return false
+	}
+
+	// Check for an blank character after the name.
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a directive",
+			start_mark, "found unexpected non-alphabetical character")
+		return false
+	}
+	*name = s
+	return true
+}
+
+// Scan the value of VERSION-DIRECTIVE.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//           ^^^^^^
+func yaml_parser_scan_version_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, major, minor *int8) bool {
+	// Eat whitespaces.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Consume the major version number.
+	if !yaml_parser_scan_version_directive_number(parser, start_mark, major) {
+		return false
+	}
+
+	// Eat '.'.
+	if parser.buffer[parser.buffer_pos] != '.' {
+		return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+			start_mark, "did not find expected digit or '.' character")
+	}
+
+	skip(parser)
+
+	// Consume the minor version number.
+	if !yaml_parser_scan_version_directive_number(parser, start_mark, minor) {
+		return false
+	}
+	return true
+}
+
+const max_number_length = 2
+
+// Scan the version number of VERSION-DIRECTIVE.
+//
+// Scope:
+//      %YAML   1.1     # a comment \n
+//              ^
+//      %YAML   1.1     # a comment \n
+//                ^
+func yaml_parser_scan_version_directive_number(parser *yaml_parser_t, start_mark yaml_mark_t, number *int8) bool {
+
+	// Repeat while the next character is digit.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	var value, length int8
+	for is_digit(parser.buffer, parser.buffer_pos) {
+		// Check if the number is too long.
+		length++
+		if length > max_number_length {
+			return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+				start_mark, "found extremely long version number")
+		}
+		value = value*10 + int8(as_digit(parser.buffer, parser.buffer_pos))
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the number was present.
+	if length == 0 {
+		return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive",
+			start_mark, "did not find expected version number")
+	}
+	*number = value
+	return true
+}
+
+// Scan the value of a TAG-DIRECTIVE token.
+//
+// Scope:
+//      %TAG    !yaml!  tag:yaml.org,2002:  \n
+//          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+//
+func yaml_parser_scan_tag_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, handle, prefix *[]byte) bool {
+	var handle_value, prefix_value []byte
+
+	// Eat whitespaces.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Scan a handle.
+	if !yaml_parser_scan_tag_handle(parser, true, start_mark, &handle_value) {
+		return false
+	}
+
+	// Expect a whitespace.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blank(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+			start_mark, "did not find expected whitespace")
+		return false
+	}
+
+	// Eat whitespaces.
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Scan a prefix.
+	if !yaml_parser_scan_tag_uri(parser, true, nil, start_mark, &prefix_value) {
+		return false
+	}
+
+	// Expect a whitespace or line break.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive",
+			start_mark, "did not find expected whitespace or line break")
+		return false
+	}
+
+	*handle = handle_value
+	*prefix = prefix_value
+	return true
+}
+
+func yaml_parser_scan_anchor(parser *yaml_parser_t, token *yaml_token_t, typ yaml_token_type_t) bool {
+	var s []byte
+
+	// Eat the indicator character.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Consume the value.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	end_mark := parser.mark
+
+	/*
+	 * Check if length of the anchor is greater than 0 and it is followed by
+	 * a whitespace character or one of the indicators:
+	 *
+	 *      '?', ':', ',', ']', '}', '%', '@', '`'.
+	 */
+
+	if len(s) == 0 ||
+		!(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '?' ||
+			parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == ',' ||
+			parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '}' ||
+			parser.buffer[parser.buffer_pos] == '%' || parser.buffer[parser.buffer_pos] == '@' ||
+			parser.buffer[parser.buffer_pos] == '`') {
+		context := "while scanning an alias"
+		if typ == yaml_ANCHOR_TOKEN {
+			context = "while scanning an anchor"
+		}
+		yaml_parser_set_scanner_error(parser, context, start_mark,
+			"did not find expected alphabetic or numeric character")
+		return false
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        typ,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+	}
+
+	return true
+}
+
+/*
+ * Scan a TAG token.
+ */
+
+func yaml_parser_scan_tag(parser *yaml_parser_t, token *yaml_token_t) bool {
+	var handle, suffix []byte
+
+	start_mark := parser.mark
+
+	// Check if the tag is in the canonical form.
+	if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+		return false
+	}
+
+	if parser.buffer[parser.buffer_pos+1] == '<' {
+		// Keep the handle as ''
+
+		// Eat '!<'
+		skip(parser)
+		skip(parser)
+
+		// Consume the tag value.
+		if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+			return false
+		}
+
+		// Check for '>' and eat it.
+		if parser.buffer[parser.buffer_pos] != '>' {
+			yaml_parser_set_scanner_error(parser, "while scanning a tag",
+				start_mark, "did not find the expected '>'")
+			return false
+		}
+
+		skip(parser)
+	} else {
+		// The tag has either the '!suffix' or the '!handle!suffix' form.
+
+		// First, try to scan a handle.
+		if !yaml_parser_scan_tag_handle(parser, false, start_mark, &handle) {
+			return false
+		}
+
+		// Check if it is, indeed, handle.
+		if handle[0] == '!' && len(handle) > 1 && handle[len(handle)-1] == '!' {
+			// Scan the suffix now.
+			if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) {
+				return false
+			}
+		} else {
+			// It wasn't a handle after all.  Scan the rest of the tag.
+			if !yaml_parser_scan_tag_uri(parser, false, handle, start_mark, &suffix) {
+				return false
+			}
+
+			// Set the handle to '!'.
+			handle = []byte{'!'}
+
+			// A special case: the '!' tag.  Set the handle to '' and the
+			// suffix to '!'.
+			if len(suffix) == 0 {
+				handle, suffix = suffix, handle
+			}
+		}
+	}
+
+	// Check the character which ends the tag.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if !is_blankz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a tag",
+			start_mark, "did not find expected whitespace or line break")
+		return false
+	}
+
+	end_mark := parser.mark
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_TAG_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      handle,
+		suffix:     suffix,
+	}
+	return true
+}
+
+// Scan a tag handle.
+func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, handle *[]byte) bool {
+	// Check the initial '!' character.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	if parser.buffer[parser.buffer_pos] != '!' {
+		yaml_parser_set_scanner_tag_error(parser, directive,
+			start_mark, "did not find expected '!'")
+		return false
+	}
+
+	var s []byte
+
+	// Copy the '!' character.
+	s = read(parser, s)
+
+	// Copy all subsequent alphabetical and numerical characters.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_alpha(parser.buffer, parser.buffer_pos) {
+		s = read(parser, s)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+
+	// Check if the trailing character is '!' and copy it.
+	if parser.buffer[parser.buffer_pos] == '!' {
+		s = read(parser, s)
+	} else {
+		// It's either the '!' tag or not really a tag handle.  If it's a %TAG
+		// directive, it's an error.  If it's a tag token, it must be a part of URI.
+		if directive && string(s) != "!" {
+			yaml_parser_set_scanner_tag_error(parser, directive,
+				start_mark, "did not find expected '!'")
+			return false
+		}
+	}
+
+	*handle = s
+	return true
+}
+
+// Scan a tag.
+func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool {
+	//size_t length = head ? strlen((char *)head) : 0
+	var s []byte
+	hasTag := len(head) > 0
+
+	// Copy the head if needed.
+	//
+	// Note that we don't copy the leading '!' character.
+	if len(head) > 1 {
+		s = append(s, head[1:]...)
+	}
+
+	// Scan the tag.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// The set of characters that may appear in URI is as follows:
+	//
+	//      '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&',
+	//      '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']',
+	//      '%'.
+	// [Go] Convert this into more reasonable logic.
+	for is_alpha(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == ';' ||
+		parser.buffer[parser.buffer_pos] == '/' || parser.buffer[parser.buffer_pos] == '?' ||
+		parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == '@' ||
+		parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '=' ||
+		parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '$' ||
+		parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '.' ||
+		parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '~' ||
+		parser.buffer[parser.buffer_pos] == '*' || parser.buffer[parser.buffer_pos] == '\'' ||
+		parser.buffer[parser.buffer_pos] == '(' || parser.buffer[parser.buffer_pos] == ')' ||
+		parser.buffer[parser.buffer_pos] == '[' || parser.buffer[parser.buffer_pos] == ']' ||
+		parser.buffer[parser.buffer_pos] == '%' {
+		// Check if it is a URI-escape sequence.
+		if parser.buffer[parser.buffer_pos] == '%' {
+			if !yaml_parser_scan_uri_escapes(parser, directive, start_mark, &s) {
+				return false
+			}
+		} else {
+			s = read(parser, s)
+		}
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		hasTag = true
+	}
+
+	if !hasTag {
+		yaml_parser_set_scanner_tag_error(parser, directive,
+			start_mark, "did not find expected tag URI")
+		return false
+	}
+	*uri = s
+	return true
+}
+
+// Decode an URI-escape sequence corresponding to a single UTF-8 character.
+func yaml_parser_scan_uri_escapes(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, s *[]byte) bool {
+
+	// Decode the required number of characters.
+	w := 1024
+	for w > 0 {
+		// Check for a URI-escaped octet.
+		if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+			return false
+		}
+
+		if !(parser.buffer[parser.buffer_pos] == '%' &&
+			is_hex(parser.buffer, parser.buffer_pos+1) &&
+			is_hex(parser.buffer, parser.buffer_pos+2)) {
+			return yaml_parser_set_scanner_tag_error(parser, directive,
+				start_mark, "did not find URI escaped octet")
+		}
+
+		// Get the octet.
+		octet := byte((as_hex(parser.buffer, parser.buffer_pos+1) << 4) + as_hex(parser.buffer, parser.buffer_pos+2))
+
+		// If it is the leading octet, determine the length of the UTF-8 sequence.
+		if w == 1024 {
+			w = width(octet)
+			if w == 0 {
+				return yaml_parser_set_scanner_tag_error(parser, directive,
+					start_mark, "found an incorrect leading UTF-8 octet")
+			}
+		} else {
+			// Check if the trailing octet is correct.
+			if octet&0xC0 != 0x80 {
+				return yaml_parser_set_scanner_tag_error(parser, directive,
+					start_mark, "found an incorrect trailing UTF-8 octet")
+			}
+		}
+
+		// Copy the octet and move the pointers.
+		*s = append(*s, octet)
+		skip(parser)
+		skip(parser)
+		skip(parser)
+		w--
+	}
+	return true
+}
+
+// Scan a block scalar.
+func yaml_parser_scan_block_scalar(parser *yaml_parser_t, token *yaml_token_t, literal bool) bool {
+	// Eat the indicator '|' or '>'.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Scan the additional block scalar indicators.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+
+	// Check for a chomping indicator.
+	var chomping, increment int
+	if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+		// Set the chomping method and eat the indicator.
+		if parser.buffer[parser.buffer_pos] == '+' {
+			chomping = +1
+		} else {
+			chomping = -1
+		}
+		skip(parser)
+
+		// Check for an indentation indicator.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if is_digit(parser.buffer, parser.buffer_pos) {
+			// Check that the indentation is greater than 0.
+			if parser.buffer[parser.buffer_pos] == '0' {
+				yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+					start_mark, "found an indentation indicator equal to 0")
+				return false
+			}
+
+			// Get the indentation level and eat the indicator.
+			increment = as_digit(parser.buffer, parser.buffer_pos)
+			skip(parser)
+		}
+
+	} else if is_digit(parser.buffer, parser.buffer_pos) {
+		// Do the same as above, but in the opposite order.
+
+		if parser.buffer[parser.buffer_pos] == '0' {
+			yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+				start_mark, "found an indentation indicator equal to 0")
+			return false
+		}
+		increment = as_digit(parser.buffer, parser.buffer_pos)
+		skip(parser)
+
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' {
+			if parser.buffer[parser.buffer_pos] == '+' {
+				chomping = +1
+			} else {
+				chomping = -1
+			}
+			skip(parser)
+		}
+	}
+
+	// Eat whitespaces and comments to the end of the line.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	for is_blank(parser.buffer, parser.buffer_pos) {
+		skip(parser)
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+	}
+	if parser.buffer[parser.buffer_pos] == '#' {
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+	}
+
+	// Check if we are at the end of the line.
+	if !is_breakz(parser.buffer, parser.buffer_pos) {
+		yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+			start_mark, "did not find expected comment or line break")
+		return false
+	}
+
+	// Eat a line break.
+	if is_break(parser.buffer, parser.buffer_pos) {
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		skip_line(parser)
+	}
+
+	end_mark := parser.mark
+
+	// Set the indentation level if it was specified.
+	var indent int
+	if increment > 0 {
+		if parser.indent >= 0 {
+			indent = parser.indent + increment
+		} else {
+			indent = increment
+		}
+	}
+
+	// Scan the leading line breaks and determine the indentation level if needed.
+	var s, leading_break, trailing_breaks []byte
+	if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+		return false
+	}
+
+	// Scan the block scalar content.
+	if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+		return false
+	}
+	var leading_blank, trailing_blank bool
+	for parser.mark.column == indent && !is_z(parser.buffer, parser.buffer_pos) {
+		// We are at the beginning of a non-empty line.
+
+		// Is it a trailing whitespace?
+		trailing_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+		// Check if we need to fold the leading line break.
+		if !literal && !leading_blank && !trailing_blank && len(leading_break) > 0 && leading_break[0] == '\n' {
+			// Do we need to join the lines by space?
+			if len(trailing_breaks) == 0 {
+				s = append(s, ' ')
+			}
+		} else {
+			s = append(s, leading_break...)
+		}
+		leading_break = leading_break[:0]
+
+		// Append the remaining line breaks.
+		s = append(s, trailing_breaks...)
+		trailing_breaks = trailing_breaks[:0]
+
+		// Is it a leading whitespace?
+		leading_blank = is_blank(parser.buffer, parser.buffer_pos)
+
+		// Consume the current line.
+		for !is_breakz(parser.buffer, parser.buffer_pos) {
+			s = read(parser, s)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Consume the line break.
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+
+		leading_break = read_line(parser, leading_break)
+
+		// Eat the following indentation spaces and line breaks.
+		if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) {
+			return false
+		}
+	}
+
+	// Chomp the tail.
+	if chomping != -1 {
+		s = append(s, leading_break...)
+	}
+	if chomping == 1 {
+		s = append(s, trailing_breaks...)
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_LITERAL_SCALAR_STYLE,
+	}
+	if !literal {
+		token.style = yaml_FOLDED_SCALAR_STYLE
+	}
+	return true
+}
+
+// Scan indentation spaces and line breaks for a block scalar.  Determine the
+// indentation level if needed.
+func yaml_parser_scan_block_scalar_breaks(parser *yaml_parser_t, indent *int, breaks *[]byte, start_mark yaml_mark_t, end_mark *yaml_mark_t) bool {
+	*end_mark = parser.mark
+
+	// Eat the indentation spaces and line breaks.
+	max_indent := 0
+	for {
+		// Eat the indentation spaces.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+		for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) {
+			skip(parser)
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+		if parser.mark.column > max_indent {
+			max_indent = parser.mark.column
+		}
+
+		// Check for a tab character messing the indentation.
+		if (*indent == 0 || parser.mark.column < *indent) && is_tab(parser.buffer, parser.buffer_pos) {
+			return yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
+				start_mark, "found a tab character where an indentation space is expected")
+		}
+
+		// Have we found a non-empty line?
+		if !is_break(parser.buffer, parser.buffer_pos) {
+			break
+		}
+
+		// Consume the line break.
+		if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+			return false
+		}
+		// [Go] Should really be returning breaks instead.
+		*breaks = read_line(parser, *breaks)
+		*end_mark = parser.mark
+	}
+
+	// Determine the indentation level if needed.
+	if *indent == 0 {
+		*indent = max_indent
+		if *indent < parser.indent+1 {
+			*indent = parser.indent + 1
+		}
+		if *indent < 1 {
+			*indent = 1
+		}
+	}
+	return true
+}
+
+// Scan a quoted scalar.
+func yaml_parser_scan_flow_scalar(parser *yaml_parser_t, token *yaml_token_t, single bool) bool {
+	// Eat the left quote.
+	start_mark := parser.mark
+	skip(parser)
+
+	// Consume the content of the quoted scalar.
+	var s, leading_break, trailing_breaks, whitespaces []byte
+	for {
+		// Check that there are no document indicators at the beginning of the line.
+		if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+			return false
+		}
+
+		if parser.mark.column == 0 &&
+			((parser.buffer[parser.buffer_pos+0] == '-' &&
+				parser.buffer[parser.buffer_pos+1] == '-' &&
+				parser.buffer[parser.buffer_pos+2] == '-') ||
+				(parser.buffer[parser.buffer_pos+0] == '.' &&
+					parser.buffer[parser.buffer_pos+1] == '.' &&
+					parser.buffer[parser.buffer_pos+2] == '.')) &&
+			is_blankz(parser.buffer, parser.buffer_pos+3) {
+			yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+				start_mark, "found unexpected document indicator")
+			return false
+		}
+
+		// Check for EOF.
+		if is_z(parser.buffer, parser.buffer_pos) {
+			yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar",
+				start_mark, "found unexpected end of stream")
+			return false
+		}
+
+		// Consume non-blank characters.
+		leading_blanks := false
+		for !is_blankz(parser.buffer, parser.buffer_pos) {
+			if single && parser.buffer[parser.buffer_pos] == '\'' && parser.buffer[parser.buffer_pos+1] == '\'' {
+				// Is is an escaped single quote.
+				s = append(s, '\'')
+				skip(parser)
+				skip(parser)
+
+			} else if single && parser.buffer[parser.buffer_pos] == '\'' {
+				// It is a right single quote.
+				break
+			} else if !single && parser.buffer[parser.buffer_pos] == '"' {
+				// It is a right double quote.
+				break
+
+			} else if !single && parser.buffer[parser.buffer_pos] == '\\' && is_break(parser.buffer, parser.buffer_pos+1) {
+				// It is an escaped line break.
+				if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) {
+					return false
+				}
+				skip(parser)
+				skip_line(parser)
+				leading_blanks = true
+				break
+
+			} else if !single && parser.buffer[parser.buffer_pos] == '\\' {
+				// It is an escape sequence.
+				code_length := 0
+
+				// Check the escape character.
+				switch parser.buffer[parser.buffer_pos+1] {
+				case '0':
+					s = append(s, 0)
+				case 'a':
+					s = append(s, '\x07')
+				case 'b':
+					s = append(s, '\x08')
+				case 't', '\t':
+					s = append(s, '\x09')
+				case 'n':
+					s = append(s, '\x0A')
+				case 'v':
+					s = append(s, '\x0B')
+				case 'f':
+					s = append(s, '\x0C')
+				case 'r':
+					s = append(s, '\x0D')
+				case 'e':
+					s = append(s, '\x1B')
+				case ' ':
+					s = append(s, '\x20')
+				case '"':
+					s = append(s, '"')
+				case '\'':
+					s = append(s, '\'')
+				case '\\':
+					s = append(s, '\\')
+				case 'N': // NEL (#x85)
+					s = append(s, '\xC2')
+					s = append(s, '\x85')
+				case '_': // #xA0
+					s = append(s, '\xC2')
+					s = append(s, '\xA0')
+				case 'L': // LS (#x2028)
+					s = append(s, '\xE2')
+					s = append(s, '\x80')
+					s = append(s, '\xA8')
+				case 'P': // PS (#x2029)
+					s = append(s, '\xE2')
+					s = append(s, '\x80')
+					s = append(s, '\xA9')
+				case 'x':
+					code_length = 2
+				case 'u':
+					code_length = 4
+				case 'U':
+					code_length = 8
+				default:
+					yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+						start_mark, "found unknown escape character")
+					return false
+				}
+
+				skip(parser)
+				skip(parser)
+
+				// Consume an arbitrary escape code.
+				if code_length > 0 {
+					var value int
+
+					// Scan the character value.
+					if parser.unread < code_length && !yaml_parser_update_buffer(parser, code_length) {
+						return false
+					}
+					for k := 0; k < code_length; k++ {
+						if !is_hex(parser.buffer, parser.buffer_pos+k) {
+							yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+								start_mark, "did not find expected hexdecimal number")
+							return false
+						}
+						value = (value << 4) + as_hex(parser.buffer, parser.buffer_pos+k)
+					}
+
+					// Check the value and write the character.
+					if (value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF {
+						yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar",
+							start_mark, "found invalid Unicode character escape code")
+						return false
+					}
+					if value <= 0x7F {
+						s = append(s, byte(value))
+					} else if value <= 0x7FF {
+						s = append(s, byte(0xC0+(value>>6)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					} else if value <= 0xFFFF {
+						s = append(s, byte(0xE0+(value>>12)))
+						s = append(s, byte(0x80+((value>>6)&0x3F)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					} else {
+						s = append(s, byte(0xF0+(value>>18)))
+						s = append(s, byte(0x80+((value>>12)&0x3F)))
+						s = append(s, byte(0x80+((value>>6)&0x3F)))
+						s = append(s, byte(0x80+(value&0x3F)))
+					}
+
+					// Advance the pointer.
+					for k := 0; k < code_length; k++ {
+						skip(parser)
+					}
+				}
+			} else {
+				// It is a non-escaped non-blank character.
+				s = read(parser, s)
+			}
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+		}
+
+		// Check if we are at the end of the scalar.
+		if single {
+			if parser.buffer[parser.buffer_pos] == '\'' {
+				break
+			}
+		} else {
+			if parser.buffer[parser.buffer_pos] == '"' {
+				break
+			}
+		}
+
+		// Consume blank characters.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+			if is_blank(parser.buffer, parser.buffer_pos) {
+				// Consume a space or a tab character.
+				if !leading_blanks {
+					whitespaces = read(parser, whitespaces)
+				} else {
+					skip(parser)
+				}
+			} else {
+				if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+					return false
+				}
+
+				// Check if it is a first line break.
+				if !leading_blanks {
+					whitespaces = whitespaces[:0]
+					leading_break = read_line(parser, leading_break)
+					leading_blanks = true
+				} else {
+					trailing_breaks = read_line(parser, trailing_breaks)
+				}
+			}
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Join the whitespaces or fold line breaks.
+		if leading_blanks {
+			// Do we need to fold line breaks?
+			if len(leading_break) > 0 && leading_break[0] == '\n' {
+				if len(trailing_breaks) == 0 {
+					s = append(s, ' ')
+				} else {
+					s = append(s, trailing_breaks...)
+				}
+			} else {
+				s = append(s, leading_break...)
+				s = append(s, trailing_breaks...)
+			}
+			trailing_breaks = trailing_breaks[:0]
+			leading_break = leading_break[:0]
+		} else {
+			s = append(s, whitespaces...)
+			whitespaces = whitespaces[:0]
+		}
+	}
+
+	// Eat the right quote.
+	skip(parser)
+	end_mark := parser.mark
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_SINGLE_QUOTED_SCALAR_STYLE,
+	}
+	if !single {
+		token.style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	}
+	return true
+}
+
+// Scan a plain scalar.
+func yaml_parser_scan_plain_scalar(parser *yaml_parser_t, token *yaml_token_t) bool {
+
+	var s, leading_break, trailing_breaks, whitespaces []byte
+	var leading_blanks bool
+	var indent = parser.indent + 1
+
+	start_mark := parser.mark
+	end_mark := parser.mark
+
+	// Consume the content of the plain scalar.
+	for {
+		// Check for a document indicator.
+		if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) {
+			return false
+		}
+		if parser.mark.column == 0 &&
+			((parser.buffer[parser.buffer_pos+0] == '-' &&
+				parser.buffer[parser.buffer_pos+1] == '-' &&
+				parser.buffer[parser.buffer_pos+2] == '-') ||
+				(parser.buffer[parser.buffer_pos+0] == '.' &&
+					parser.buffer[parser.buffer_pos+1] == '.' &&
+					parser.buffer[parser.buffer_pos+2] == '.')) &&
+			is_blankz(parser.buffer, parser.buffer_pos+3) {
+			break
+		}
+
+		// Check for a comment.
+		if parser.buffer[parser.buffer_pos] == '#' {
+			break
+		}
+
+		// Consume non-blank characters.
+		for !is_blankz(parser.buffer, parser.buffer_pos) {
+
+			// Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13".
+			if parser.flow_level > 0 &&
+				parser.buffer[parser.buffer_pos] == ':' &&
+				!is_blankz(parser.buffer, parser.buffer_pos+1) {
+				yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+					start_mark, "found unexpected ':'")
+				return false
+			}
+
+			// Check for indicators that may end a plain scalar.
+			if (parser.buffer[parser.buffer_pos] == ':' && is_blankz(parser.buffer, parser.buffer_pos+1)) ||
+				(parser.flow_level > 0 &&
+					(parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == ':' ||
+						parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == '[' ||
+						parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' ||
+						parser.buffer[parser.buffer_pos] == '}')) {
+				break
+			}
+
+			// Check if we need to join whitespaces and breaks.
+			if leading_blanks || len(whitespaces) > 0 {
+				if leading_blanks {
+					// Do we need to fold line breaks?
+					if leading_break[0] == '\n' {
+						if len(trailing_breaks) == 0 {
+							s = append(s, ' ')
+						} else {
+							s = append(s, trailing_breaks...)
+						}
+					} else {
+						s = append(s, leading_break...)
+						s = append(s, trailing_breaks...)
+					}
+					trailing_breaks = trailing_breaks[:0]
+					leading_break = leading_break[:0]
+					leading_blanks = false
+				} else {
+					s = append(s, whitespaces...)
+					whitespaces = whitespaces[:0]
+				}
+			}
+
+			// Copy the character.
+			s = read(parser, s)
+
+			end_mark = parser.mark
+			if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+				return false
+			}
+		}
+
+		// Is it the end?
+		if !(is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos)) {
+			break
+		}
+
+		// Consume blank characters.
+		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+			return false
+		}
+
+		for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) {
+			if is_blank(parser.buffer, parser.buffer_pos) {
+
+				// Check for tab character that abuse indentation.
+				if leading_blanks && parser.mark.column < indent && is_tab(parser.buffer, parser.buffer_pos) {
+					yaml_parser_set_scanner_error(parser, "while scanning a plain scalar",
+						start_mark, "found a tab character that violate indentation")
+					return false
+				}
+
+				// Consume a space or a tab character.
+				if !leading_blanks {
+					whitespaces = read(parser, whitespaces)
+				} else {
+					skip(parser)
+				}
+			} else {
+				if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) {
+					return false
+				}
+
+				// Check if it is a first line break.
+				if !leading_blanks {
+					whitespaces = whitespaces[:0]
+					leading_break = read_line(parser, leading_break)
+					leading_blanks = true
+				} else {
+					trailing_breaks = read_line(parser, trailing_breaks)
+				}
+			}
+			if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
+				return false
+			}
+		}
+
+		// Check indentation level.
+		if parser.flow_level == 0 && parser.mark.column < indent {
+			break
+		}
+	}
+
+	// Create a token.
+	*token = yaml_token_t{
+		typ:        yaml_SCALAR_TOKEN,
+		start_mark: start_mark,
+		end_mark:   end_mark,
+		value:      s,
+		style:      yaml_PLAIN_SCALAR_STYLE,
+	}
+
+	// Note that we change the 'simple_key_allowed' flag.
+	if leading_blanks {
+		parser.simple_key_allowed = true
+	}
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/sorter.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/sorter.go
new file mode 100644
index 00000000..5958822f
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/sorter.go
@@ -0,0 +1,104 @@
+package yaml
+
+import (
+	"reflect"
+	"unicode"
+)
+
+type keyList []reflect.Value
+
+func (l keyList) Len() int      { return len(l) }
+func (l keyList) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
+func (l keyList) Less(i, j int) bool {
+	a := l[i]
+	b := l[j]
+	ak := a.Kind()
+	bk := b.Kind()
+	for (ak == reflect.Interface || ak == reflect.Ptr) && !a.IsNil() {
+		a = a.Elem()
+		ak = a.Kind()
+	}
+	for (bk == reflect.Interface || bk == reflect.Ptr) && !b.IsNil() {
+		b = b.Elem()
+		bk = b.Kind()
+	}
+	af, aok := keyFloat(a)
+	bf, bok := keyFloat(b)
+	if aok && bok {
+		if af != bf {
+			return af < bf
+		}
+		if ak != bk {
+			return ak < bk
+		}
+		return numLess(a, b)
+	}
+	if ak != reflect.String || bk != reflect.String {
+		return ak < bk
+	}
+	ar, br := []rune(a.String()), []rune(b.String())
+	for i := 0; i < len(ar) && i < len(br); i++ {
+		if ar[i] == br[i] {
+			continue
+		}
+		al := unicode.IsLetter(ar[i])
+		bl := unicode.IsLetter(br[i])
+		if al && bl {
+			return ar[i] < br[i]
+		}
+		if al || bl {
+			return bl
+		}
+		var ai, bi int
+		var an, bn int64
+		for ai = i; ai < len(ar) && unicode.IsDigit(ar[ai]); ai++ {
+			an = an*10 + int64(ar[ai]-'0')
+		}
+		for bi = i; bi < len(br) && unicode.IsDigit(br[bi]); bi++ {
+			bn = bn*10 + int64(br[bi]-'0')
+		}
+		if an != bn {
+			return an < bn
+		}
+		if ai != bi {
+			return ai < bi
+		}
+		return ar[i] < br[i]
+	}
+	return len(ar) < len(br)
+}
+
+// keyFloat returns a float value for v if it is a number/bool
+// and whether it is a number/bool or not.
+func keyFloat(v reflect.Value) (f float64, ok bool) {
+	switch v.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return float64(v.Int()), true
+	case reflect.Float32, reflect.Float64:
+		return v.Float(), true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return float64(v.Uint()), true
+	case reflect.Bool:
+		if v.Bool() {
+			return 1, true
+		}
+		return 0, true
+	}
+	return 0, false
+}
+
+// numLess returns whether a < b.
+// a and b must necessarily have the same kind.
+func numLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return a.Int() < b.Int()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	}
+	panic("not a number")
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/writerc.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/writerc.go
new file mode 100644
index 00000000..190362f2
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/writerc.go
@@ -0,0 +1,89 @@
+package yaml
+
+// Set the writer error and return false.
+func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool {
+	emitter.error = yaml_WRITER_ERROR
+	emitter.problem = problem
+	return false
+}
+
+// Flush the output buffer.
+func yaml_emitter_flush(emitter *yaml_emitter_t) bool {
+	if emitter.write_handler == nil {
+		panic("write handler not set")
+	}
+
+	// Check if the buffer is empty.
+	if emitter.buffer_pos == 0 {
+		return true
+	}
+
+	// If the output encoding is UTF-8, we don't need to recode the buffer.
+	if emitter.encoding == yaml_UTF8_ENCODING {
+		if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil {
+			return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+		}
+		emitter.buffer_pos = 0
+		return true
+	}
+
+	// Recode the buffer into the raw buffer.
+	var low, high int
+	if emitter.encoding == yaml_UTF16LE_ENCODING {
+		low, high = 0, 1
+	} else {
+		high, low = 1, 0
+	}
+
+	pos := 0
+	for pos < emitter.buffer_pos {
+		// See the "reader.c" code for more details on UTF-8 encoding.  Note
+		// that we assume that the buffer contains a valid UTF-8 sequence.
+
+		// Read the next UTF-8 character.
+		octet := emitter.buffer[pos]
+
+		var w int
+		var value rune
+		switch {
+		case octet&0x80 == 0x00:
+			w, value = 1, rune(octet&0x7F)
+		case octet&0xE0 == 0xC0:
+			w, value = 2, rune(octet&0x1F)
+		case octet&0xF0 == 0xE0:
+			w, value = 3, rune(octet&0x0F)
+		case octet&0xF8 == 0xF0:
+			w, value = 4, rune(octet&0x07)
+		}
+		for k := 1; k < w; k++ {
+			octet = emitter.buffer[pos+k]
+			value = (value << 6) + (rune(octet) & 0x3F)
+		}
+		pos += w
+
+		// Write the character.
+		if value < 0x10000 {
+			var b [2]byte
+			b[high] = byte(value >> 8)
+			b[low] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1])
+		} else {
+			// Write the character using a surrogate pair (check "reader.c").
+			var b [4]byte
+			value -= 0x10000
+			b[high] = byte(0xD8 + (value >> 18))
+			b[low] = byte((value >> 10) & 0xFF)
+			b[high+2] = byte(0xDC + ((value >> 8) & 0xFF))
+			b[low+2] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1], b[2], b[3])
+		}
+	}
+
+	// Write the raw buffer.
+	if err := emitter.write_handler(emitter, emitter.raw_buffer); err != nil {
+		return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+	}
+	emitter.buffer_pos = 0
+	emitter.raw_buffer = emitter.raw_buffer[:0]
+	return true
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yaml.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yaml.go
new file mode 100644
index 00000000..5e3c2dae
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yaml.go
@@ -0,0 +1,357 @@
+// Package yaml implements YAML support for the Go language.
+//
+// Source code and other details for the project are available at GitHub:
+//
+//   https://github.com/go-yaml/yaml
+//
+package yaml
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+)
+
+// MapSlice encodes and decodes as a YAML map.
+// The order of keys is preserved when encoding and decoding.
+type MapSlice []MapItem
+
+// MapItem is an item in a MapSlice.
+type MapItem struct {
+	Key, Value interface{}
+}
+
+// The Unmarshaler interface may be implemented by types to customize their
+// behavior when being unmarshaled from a YAML document. The UnmarshalYAML
+// method receives a function that may be called to unmarshal the original
+// YAML value into a field or variable. It is safe to call the unmarshal
+// function parameter more than once if necessary.
+type Unmarshaler interface {
+	UnmarshalYAML(unmarshal func(interface{}) error) error
+}
+
+// The Marshaler interface may be implemented by types to customize their
+// behavior when being marshaled into a YAML document. The returned value
+// is marshaled in place of the original value implementing Marshaler.
+//
+// If an error is returned by MarshalYAML, the marshaling procedure stops
+// and returns with the provided error.
+type Marshaler interface {
+	MarshalYAML() (interface{}, error)
+}
+
+// Unmarshal decodes the first document found within the in byte slice
+// and assigns decoded values into the out value.
+//
+// Maps and pointers (to a struct, string, int, etc) are accepted as out
+// values. If an internal pointer within a struct is not initialized,
+// the yaml package will initialize it if necessary for unmarshalling
+// the provided data. The out parameter must not be nil.
+//
+// The type of the decoded values should be compatible with the respective
+// values in out. If one or more values cannot be decoded due to a type
+// mismatches, decoding continues partially until the end of the YAML
+// content, and a *yaml.TypeError is returned with details for all
+// missed values.
+//
+// Struct fields are only unmarshalled if they are exported (have an
+// upper case first letter), and are unmarshalled using the field name
+// lowercased as the default key. Custom keys may be defined via the
+// "yaml" name in the field tag: the content preceding the first comma
+// is used as the key, and the following comma-separated options are
+// used to tweak the marshalling process (see Marshal).
+// Conflicting names result in a runtime error.
+//
+// For example:
+//
+//     type T struct {
+//         F int `yaml:"a,omitempty"`
+//         B int
+//     }
+//     var t T
+//     yaml.Unmarshal([]byte("a: 1\nb: 2"), &t)
+//
+// See the documentation of Marshal for the format of tags and a list of
+// supported tag options.
+//
+func Unmarshal(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, false)
+}
+
+// UnmarshalStrict is like Unmarshal except that any fields that are found
+// in the data that do not have corresponding struct members will result in
+// an error.
+func UnmarshalStrict(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, true)
+}
+
+func unmarshal(in []byte, out interface{}, strict bool) (err error) {
+	defer handleErr(&err)
+	d := newDecoder(strict)
+	p := newParser(in)
+	defer p.destroy()
+	node := p.parse()
+	if node != nil {
+		v := reflect.ValueOf(out)
+		if v.Kind() == reflect.Ptr && !v.IsNil() {
+			v = v.Elem()
+		}
+		d.unmarshal(node, v)
+	}
+	if len(d.terrors) > 0 {
+		return &TypeError{d.terrors}
+	}
+	return nil
+}
+
+// Marshal serializes the value provided into a YAML document. The structure
+// of the generated document will reflect the structure of the value itself.
+// Maps and pointers (to struct, string, int, etc) are accepted as the in value.
+//
+// Struct fields are only unmarshalled if they are exported (have an upper case
+// first letter), and are unmarshalled using the field name lowercased as the
+// default key. Custom keys may be defined via the "yaml" name in the field
+// tag: the content preceding the first comma is used as the key, and the
+// following comma-separated options are used to tweak the marshalling process.
+// Conflicting names result in a runtime error.
+//
+// The field tag format accepted is:
+//
+//     `(...) yaml:"[<key>][,<flag1>[,<flag2>]]" (...)`
+//
+// The following flags are currently supported:
+//
+//     omitempty    Only include the field if it's not set to the zero
+//                  value for the type or to empty slices or maps.
+//                  Does not apply to zero valued structs.
+//
+//     flow         Marshal using a flow style (useful for structs,
+//                  sequences and maps).
+//
+//     inline       Inline the field, which must be a struct or a map,
+//                  causing all of its fields or keys to be processed as if
+//                  they were part of the outer struct. For maps, keys must
+//                  not conflict with the yaml keys of other struct fields.
+//
+// In addition, if the key is "-", the field is ignored.
+//
+// For example:
+//
+//     type T struct {
+//         F int `yaml:"a,omitempty"`
+//         B int
+//     }
+//     yaml.Marshal(&T{B: 2}) // Returns "b: 2\n"
+//     yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n"
+//
+func Marshal(in interface{}) (out []byte, err error) {
+	defer handleErr(&err)
+	e := newEncoder()
+	defer e.destroy()
+	e.marshal("", reflect.ValueOf(in))
+	e.finish()
+	out = e.out
+	return
+}
+
+func handleErr(err *error) {
+	if v := recover(); v != nil {
+		if e, ok := v.(yamlError); ok {
+			*err = e.err
+		} else {
+			panic(v)
+		}
+	}
+}
+
+type yamlError struct {
+	err error
+}
+
+func fail(err error) {
+	panic(yamlError{err})
+}
+
+func failf(format string, args ...interface{}) {
+	panic(yamlError{fmt.Errorf("yaml: "+format, args...)})
+}
+
+// A TypeError is returned by Unmarshal when one or more fields in
+// the YAML document cannot be properly decoded into the requested
+// types. When this error is returned, the value is still
+// unmarshaled partially.
+type TypeError struct {
+	Errors []string
+}
+
+func (e *TypeError) Error() string {
+	return fmt.Sprintf("yaml: unmarshal errors:\n  %s", strings.Join(e.Errors, "\n  "))
+}
+
+// --------------------------------------------------------------------------
+// Maintain a mapping of keys to structure field indexes
+
+// The code in this section was copied from mgo/bson.
+
+// structInfo holds details for the serialization of fields of
+// a given struct.
+type structInfo struct {
+	FieldsMap  map[string]fieldInfo
+	FieldsList []fieldInfo
+
+	// InlineMap is the number of the field in the struct that
+	// contains an ,inline map, or -1 if there's none.
+	InlineMap int
+}
+
+type fieldInfo struct {
+	Key       string
+	Num       int
+	OmitEmpty bool
+	Flow      bool
+
+	// Inline holds the field index if the field is part of an inlined struct.
+	Inline []int
+}
+
+var structMap = make(map[reflect.Type]*structInfo)
+var fieldMapMutex sync.RWMutex
+
+func getStructInfo(st reflect.Type) (*structInfo, error) {
+	fieldMapMutex.RLock()
+	sinfo, found := structMap[st]
+	fieldMapMutex.RUnlock()
+	if found {
+		return sinfo, nil
+	}
+
+	n := st.NumField()
+	fieldsMap := make(map[string]fieldInfo)
+	fieldsList := make([]fieldInfo, 0, n)
+	inlineMap := -1
+	for i := 0; i != n; i++ {
+		field := st.Field(i)
+		if field.PkgPath != "" && !field.Anonymous {
+			continue // Private field
+		}
+
+		info := fieldInfo{Num: i}
+
+		tag := field.Tag.Get("yaml")
+		if tag == "" && strings.Index(string(field.Tag), ":") < 0 {
+			tag = string(field.Tag)
+		}
+		if tag == "-" {
+			continue
+		}
+
+		inline := false
+		fields := strings.Split(tag, ",")
+		if len(fields) > 1 {
+			for _, flag := range fields[1:] {
+				switch flag {
+				case "omitempty":
+					info.OmitEmpty = true
+				case "flow":
+					info.Flow = true
+				case "inline":
+					inline = true
+				default:
+					return nil, errors.New(fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st))
+				}
+			}
+			tag = fields[0]
+		}
+
+		if inline {
+			switch field.Type.Kind() {
+			case reflect.Map:
+				if inlineMap >= 0 {
+					return nil, errors.New("Multiple ,inline maps in struct " + st.String())
+				}
+				if field.Type.Key() != reflect.TypeOf("") {
+					return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String())
+				}
+				inlineMap = info.Num
+			case reflect.Struct:
+				sinfo, err := getStructInfo(field.Type)
+				if err != nil {
+					return nil, err
+				}
+				for _, finfo := range sinfo.FieldsList {
+					if _, found := fieldsMap[finfo.Key]; found {
+						msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String()
+						return nil, errors.New(msg)
+					}
+					if finfo.Inline == nil {
+						finfo.Inline = []int{i, finfo.Num}
+					} else {
+						finfo.Inline = append([]int{i}, finfo.Inline...)
+					}
+					fieldsMap[finfo.Key] = finfo
+					fieldsList = append(fieldsList, finfo)
+				}
+			default:
+				//return nil, errors.New("Option ,inline needs a struct value or map field")
+				return nil, errors.New("Option ,inline needs a struct value field")
+			}
+			continue
+		}
+
+		if tag != "" {
+			info.Key = tag
+		} else {
+			info.Key = strings.ToLower(field.Name)
+		}
+
+		if _, found = fieldsMap[info.Key]; found {
+			msg := "Duplicated key '" + info.Key + "' in struct " + st.String()
+			return nil, errors.New(msg)
+		}
+
+		fieldsList = append(fieldsList, info)
+		fieldsMap[info.Key] = info
+	}
+
+	sinfo = &structInfo{fieldsMap, fieldsList, inlineMap}
+
+	fieldMapMutex.Lock()
+	structMap[st] = sinfo
+	fieldMapMutex.Unlock()
+	return sinfo, nil
+}
+
+func isZero(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.String:
+		return len(v.String()) == 0
+	case reflect.Interface, reflect.Ptr:
+		return v.IsNil()
+	case reflect.Slice:
+		return v.Len() == 0
+	case reflect.Map:
+		return v.Len() == 0
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int() == 0
+	case reflect.Float32, reflect.Float64:
+		return v.Float() == 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint() == 0
+	case reflect.Bool:
+		return !v.Bool()
+	case reflect.Struct:
+		vt := v.Type()
+		for i := v.NumField() - 1; i >= 0; i-- {
+			if vt.Field(i).PkgPath != "" {
+				continue // Private field
+			}
+			if !isZero(v.Field(i)) {
+				return false
+			}
+		}
+		return true
+	}
+	return false
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlh.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlh.go
new file mode 100644
index 00000000..3caeca04
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlh.go
@@ -0,0 +1,716 @@
+package yaml
+
+import (
+	"io"
+)
+
+// The version directive data.
+type yaml_version_directive_t struct {
+	major int8 // The major version number.
+	minor int8 // The minor version number.
+}
+
+// The tag directive data.
+type yaml_tag_directive_t struct {
+	handle []byte // The tag handle.
+	prefix []byte // The tag prefix.
+}
+
+type yaml_encoding_t int
+
+// The stream encoding.
+const (
+	// Let the parser choose the encoding.
+	yaml_ANY_ENCODING yaml_encoding_t = iota
+
+	yaml_UTF8_ENCODING    // The default UTF-8 encoding.
+	yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM.
+	yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM.
+)
+
+type yaml_break_t int
+
+// Line break types.
+const (
+	// Let the parser choose the break type.
+	yaml_ANY_BREAK yaml_break_t = iota
+
+	yaml_CR_BREAK   // Use CR for line breaks (Mac style).
+	yaml_LN_BREAK   // Use LN for line breaks (Unix style).
+	yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style).
+)
+
+type yaml_error_type_t int
+
+// Many bad things could happen with the parser and emitter.
+const (
+	// No error is produced.
+	yaml_NO_ERROR yaml_error_type_t = iota
+
+	yaml_MEMORY_ERROR   // Cannot allocate or reallocate a block of memory.
+	yaml_READER_ERROR   // Cannot read or decode the input stream.
+	yaml_SCANNER_ERROR  // Cannot scan the input stream.
+	yaml_PARSER_ERROR   // Cannot parse the input stream.
+	yaml_COMPOSER_ERROR // Cannot compose a YAML document.
+	yaml_WRITER_ERROR   // Cannot write to the output stream.
+	yaml_EMITTER_ERROR  // Cannot emit a YAML stream.
+)
+
+// The pointer position.
+type yaml_mark_t struct {
+	index  int // The position index.
+	line   int // The position line.
+	column int // The position column.
+}
+
+// Node Styles
+
+type yaml_style_t int8
+
+type yaml_scalar_style_t yaml_style_t
+
+// Scalar styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota
+
+	yaml_PLAIN_SCALAR_STYLE         // The plain scalar style.
+	yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style.
+	yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style.
+	yaml_LITERAL_SCALAR_STYLE       // The literal scalar style.
+	yaml_FOLDED_SCALAR_STYLE        // The folded scalar style.
+)
+
+type yaml_sequence_style_t yaml_style_t
+
+// Sequence styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota
+
+	yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
+	yaml_FLOW_SEQUENCE_STYLE  // The flow sequence style.
+)
+
+type yaml_mapping_style_t yaml_style_t
+
+// Mapping styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota
+
+	yaml_BLOCK_MAPPING_STYLE // The block mapping style.
+	yaml_FLOW_MAPPING_STYLE  // The flow mapping style.
+)
+
+// Tokens
+
+type yaml_token_type_t int
+
+// Token types.
+const (
+	// An empty token.
+	yaml_NO_TOKEN yaml_token_type_t = iota
+
+	yaml_STREAM_START_TOKEN // A STREAM-START token.
+	yaml_STREAM_END_TOKEN   // A STREAM-END token.
+
+	yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
+	yaml_TAG_DIRECTIVE_TOKEN     // A TAG-DIRECTIVE token.
+	yaml_DOCUMENT_START_TOKEN    // A DOCUMENT-START token.
+	yaml_DOCUMENT_END_TOKEN      // A DOCUMENT-END token.
+
+	yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
+	yaml_BLOCK_MAPPING_START_TOKEN  // A BLOCK-SEQUENCE-END token.
+	yaml_BLOCK_END_TOKEN            // A BLOCK-END token.
+
+	yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token.
+	yaml_FLOW_SEQUENCE_END_TOKEN   // A FLOW-SEQUENCE-END token.
+	yaml_FLOW_MAPPING_START_TOKEN  // A FLOW-MAPPING-START token.
+	yaml_FLOW_MAPPING_END_TOKEN    // A FLOW-MAPPING-END token.
+
+	yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
+	yaml_FLOW_ENTRY_TOKEN  // A FLOW-ENTRY token.
+	yaml_KEY_TOKEN         // A KEY token.
+	yaml_VALUE_TOKEN       // A VALUE token.
+
+	yaml_ALIAS_TOKEN  // An ALIAS token.
+	yaml_ANCHOR_TOKEN // An ANCHOR token.
+	yaml_TAG_TOKEN    // A TAG token.
+	yaml_SCALAR_TOKEN // A SCALAR token.
+)
+
+func (tt yaml_token_type_t) String() string {
+	switch tt {
+	case yaml_NO_TOKEN:
+		return "yaml_NO_TOKEN"
+	case yaml_STREAM_START_TOKEN:
+		return "yaml_STREAM_START_TOKEN"
+	case yaml_STREAM_END_TOKEN:
+		return "yaml_STREAM_END_TOKEN"
+	case yaml_VERSION_DIRECTIVE_TOKEN:
+		return "yaml_VERSION_DIRECTIVE_TOKEN"
+	case yaml_TAG_DIRECTIVE_TOKEN:
+		return "yaml_TAG_DIRECTIVE_TOKEN"
+	case yaml_DOCUMENT_START_TOKEN:
+		return "yaml_DOCUMENT_START_TOKEN"
+	case yaml_DOCUMENT_END_TOKEN:
+		return "yaml_DOCUMENT_END_TOKEN"
+	case yaml_BLOCK_SEQUENCE_START_TOKEN:
+		return "yaml_BLOCK_SEQUENCE_START_TOKEN"
+	case yaml_BLOCK_MAPPING_START_TOKEN:
+		return "yaml_BLOCK_MAPPING_START_TOKEN"
+	case yaml_BLOCK_END_TOKEN:
+		return "yaml_BLOCK_END_TOKEN"
+	case yaml_FLOW_SEQUENCE_START_TOKEN:
+		return "yaml_FLOW_SEQUENCE_START_TOKEN"
+	case yaml_FLOW_SEQUENCE_END_TOKEN:
+		return "yaml_FLOW_SEQUENCE_END_TOKEN"
+	case yaml_FLOW_MAPPING_START_TOKEN:
+		return "yaml_FLOW_MAPPING_START_TOKEN"
+	case yaml_FLOW_MAPPING_END_TOKEN:
+		return "yaml_FLOW_MAPPING_END_TOKEN"
+	case yaml_BLOCK_ENTRY_TOKEN:
+		return "yaml_BLOCK_ENTRY_TOKEN"
+	case yaml_FLOW_ENTRY_TOKEN:
+		return "yaml_FLOW_ENTRY_TOKEN"
+	case yaml_KEY_TOKEN:
+		return "yaml_KEY_TOKEN"
+	case yaml_VALUE_TOKEN:
+		return "yaml_VALUE_TOKEN"
+	case yaml_ALIAS_TOKEN:
+		return "yaml_ALIAS_TOKEN"
+	case yaml_ANCHOR_TOKEN:
+		return "yaml_ANCHOR_TOKEN"
+	case yaml_TAG_TOKEN:
+		return "yaml_TAG_TOKEN"
+	case yaml_SCALAR_TOKEN:
+		return "yaml_SCALAR_TOKEN"
+	}
+	return "<unknown token>"
+}
+
+// The token structure.
+type yaml_token_t struct {
+	// The token type.
+	typ yaml_token_type_t
+
+	// The start/end of the token.
+	start_mark, end_mark yaml_mark_t
+
+	// The stream encoding (for yaml_STREAM_START_TOKEN).
+	encoding yaml_encoding_t
+
+	// The alias/anchor/scalar value or tag/tag directive handle
+	// (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN).
+	value []byte
+
+	// The tag suffix (for yaml_TAG_TOKEN).
+	suffix []byte
+
+	// The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN).
+	prefix []byte
+
+	// The scalar style (for yaml_SCALAR_TOKEN).
+	style yaml_scalar_style_t
+
+	// The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN).
+	major, minor int8
+}
+
+// Events
+
+type yaml_event_type_t int8
+
+// Event types.
+const (
+	// An empty event.
+	yaml_NO_EVENT yaml_event_type_t = iota
+
+	yaml_STREAM_START_EVENT   // A STREAM-START event.
+	yaml_STREAM_END_EVENT     // A STREAM-END event.
+	yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event.
+	yaml_DOCUMENT_END_EVENT   // A DOCUMENT-END event.
+	yaml_ALIAS_EVENT          // An ALIAS event.
+	yaml_SCALAR_EVENT         // A SCALAR event.
+	yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event.
+	yaml_SEQUENCE_END_EVENT   // A SEQUENCE-END event.
+	yaml_MAPPING_START_EVENT  // A MAPPING-START event.
+	yaml_MAPPING_END_EVENT    // A MAPPING-END event.
+)
+
+// The event structure.
+type yaml_event_t struct {
+
+	// The event type.
+	typ yaml_event_type_t
+
+	// The start and end of the event.
+	start_mark, end_mark yaml_mark_t
+
+	// The document encoding (for yaml_STREAM_START_EVENT).
+	encoding yaml_encoding_t
+
+	// The version directive (for yaml_DOCUMENT_START_EVENT).
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives (for yaml_DOCUMENT_START_EVENT).
+	tag_directives []yaml_tag_directive_t
+
+	// The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT).
+	anchor []byte
+
+	// The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	tag []byte
+
+	// The scalar value (for yaml_SCALAR_EVENT).
+	value []byte
+
+	// Is the document start/end indicator implicit, or the tag optional?
+	// (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT).
+	implicit bool
+
+	// Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT).
+	quoted_implicit bool
+
+	// The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	style yaml_style_t
+}
+
+func (e *yaml_event_t) scalar_style() yaml_scalar_style_t     { return yaml_scalar_style_t(e.style) }
+func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) }
+func (e *yaml_event_t) mapping_style() yaml_mapping_style_t   { return yaml_mapping_style_t(e.style) }
+
+// Nodes
+
+const (
+	yaml_NULL_TAG      = "tag:yaml.org,2002:null"      // The tag !!null with the only possible value: null.
+	yaml_BOOL_TAG      = "tag:yaml.org,2002:bool"      // The tag !!bool with the values: true and false.
+	yaml_STR_TAG       = "tag:yaml.org,2002:str"       // The tag !!str for string values.
+	yaml_INT_TAG       = "tag:yaml.org,2002:int"       // The tag !!int for integer values.
+	yaml_FLOAT_TAG     = "tag:yaml.org,2002:float"     // The tag !!float for float values.
+	yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values.
+
+	yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences.
+	yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping.
+
+	// Not in original libyaml.
+	yaml_BINARY_TAG = "tag:yaml.org,2002:binary"
+	yaml_MERGE_TAG  = "tag:yaml.org,2002:merge"
+
+	yaml_DEFAULT_SCALAR_TAG   = yaml_STR_TAG // The default scalar tag is !!str.
+	yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq.
+	yaml_DEFAULT_MAPPING_TAG  = yaml_MAP_TAG // The default mapping tag is !!map.
+)
+
+type yaml_node_type_t int
+
+// Node types.
+const (
+	// An empty node.
+	yaml_NO_NODE yaml_node_type_t = iota
+
+	yaml_SCALAR_NODE   // A scalar node.
+	yaml_SEQUENCE_NODE // A sequence node.
+	yaml_MAPPING_NODE  // A mapping node.
+)
+
+// An element of a sequence node.
+type yaml_node_item_t int
+
+// An element of a mapping node.
+type yaml_node_pair_t struct {
+	key   int // The key of the element.
+	value int // The value of the element.
+}
+
+// The node structure.
+type yaml_node_t struct {
+	typ yaml_node_type_t // The node type.
+	tag []byte           // The node tag.
+
+	// The node data.
+
+	// The scalar parameters (for yaml_SCALAR_NODE).
+	scalar struct {
+		value  []byte              // The scalar value.
+		length int                 // The length of the scalar value.
+		style  yaml_scalar_style_t // The scalar style.
+	}
+
+	// The sequence parameters (for YAML_SEQUENCE_NODE).
+	sequence struct {
+		items_data []yaml_node_item_t    // The stack of sequence items.
+		style      yaml_sequence_style_t // The sequence style.
+	}
+
+	// The mapping parameters (for yaml_MAPPING_NODE).
+	mapping struct {
+		pairs_data  []yaml_node_pair_t   // The stack of mapping pairs (key, value).
+		pairs_start *yaml_node_pair_t    // The beginning of the stack.
+		pairs_end   *yaml_node_pair_t    // The end of the stack.
+		pairs_top   *yaml_node_pair_t    // The top of the stack.
+		style       yaml_mapping_style_t // The mapping style.
+	}
+
+	start_mark yaml_mark_t // The beginning of the node.
+	end_mark   yaml_mark_t // The end of the node.
+
+}
+
+// The document structure.
+type yaml_document_t struct {
+
+	// The document nodes.
+	nodes []yaml_node_t
+
+	// The version directive.
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives.
+	tag_directives_data  []yaml_tag_directive_t
+	tag_directives_start int // The beginning of the tag directives list.
+	tag_directives_end   int // The end of the tag directives list.
+
+	start_implicit int // Is the document start indicator implicit?
+	end_implicit   int // Is the document end indicator implicit?
+
+	// The start/end of the document.
+	start_mark, end_mark yaml_mark_t
+}
+
+// The prototype of a read handler.
+//
+// The read handler is called when the parser needs to read more bytes from the
+// source. The handler should write not more than size bytes to the buffer.
+// The number of written bytes should be set to the size_read variable.
+//
+// [in,out]   data        A pointer to an application data specified by
+//                        yaml_parser_set_input().
+// [out]      buffer      The buffer to write the data from the source.
+// [in]       size        The size of the buffer.
+// [out]      size_read   The actual number of bytes read from the source.
+//
+// On success, the handler should return 1.  If the handler failed,
+// the returned value should be 0. On EOF, the handler should set the
+// size_read to 0 and return 1.
+type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)
+
+// This structure holds information about a potential simple key.
+type yaml_simple_key_t struct {
+	possible     bool        // Is a simple key possible?
+	required     bool        // Is a simple key required?
+	token_number int         // The number of the token.
+	mark         yaml_mark_t // The position mark.
+}
+
+// The states of the parser.
+type yaml_parser_state_t int
+
+const (
+	yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
+
+	yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE           // Expect the beginning of an implicit document.
+	yaml_PARSE_DOCUMENT_START_STATE                    // Expect DOCUMENT-START.
+	yaml_PARSE_DOCUMENT_CONTENT_STATE                  // Expect the content of a document.
+	yaml_PARSE_DOCUMENT_END_STATE                      // Expect DOCUMENT-END.
+	yaml_PARSE_BLOCK_NODE_STATE                        // Expect a block node.
+	yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence.
+	yaml_PARSE_FLOW_NODE_STATE                         // Expect a flow node.
+	yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE        // Expect the first entry of a block sequence.
+	yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE              // Expect an entry of a block sequence.
+	yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE         // Expect an entry of an indentless sequence.
+	yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE           // Expect the first key of a block mapping.
+	yaml_PARSE_BLOCK_MAPPING_KEY_STATE                 // Expect a block mapping key.
+	yaml_PARSE_BLOCK_MAPPING_VALUE_STATE               // Expect a block mapping value.
+	yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE         // Expect the first entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE               // Expect an entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE   // Expect a key of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE   // Expect the and of an ordered mapping entry.
+	yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE            // Expect the first key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_KEY_STATE                  // Expect a key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_VALUE_STATE                // Expect a value of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE          // Expect an empty value of a flow mapping.
+	yaml_PARSE_END_STATE                               // Expect nothing.
+)
+
+func (ps yaml_parser_state_t) String() string {
+	switch ps {
+	case yaml_PARSE_STREAM_START_STATE:
+		return "yaml_PARSE_STREAM_START_STATE"
+	case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+		return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_START_STATE:
+		return "yaml_PARSE_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+		return "yaml_PARSE_DOCUMENT_CONTENT_STATE"
+	case yaml_PARSE_DOCUMENT_END_STATE:
+		return "yaml_PARSE_DOCUMENT_END_STATE"
+	case yaml_PARSE_BLOCK_NODE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_STATE"
+	case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE"
+	case yaml_PARSE_FLOW_NODE_STATE:
+		return "yaml_PARSE_FLOW_NODE_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE"
+	case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE"
+	case yaml_PARSE_END_STATE:
+		return "yaml_PARSE_END_STATE"
+	}
+	return "<unknown parser state>"
+}
+
+// This structure holds aliases data.
+type yaml_alias_data_t struct {
+	anchor []byte      // The anchor.
+	index  int         // The node id.
+	mark   yaml_mark_t // The anchor mark.
+}
+
+// The parser structure.
+//
+// All members are internal. Manage the structure using the
+// yaml_parser_ family of functions.
+type yaml_parser_t struct {
+
+	// Error handling
+
+	error yaml_error_type_t // Error type.
+
+	problem string // Error description.
+
+	// The byte about which the problem occurred.
+	problem_offset int
+	problem_value  int
+	problem_mark   yaml_mark_t
+
+	// The error context.
+	context      string
+	context_mark yaml_mark_t
+
+	// Reader stuff
+
+	read_handler yaml_read_handler_t // Read handler.
+
+	input_file io.Reader // File input data.
+	input      []byte    // String input data.
+	input_pos  int
+
+	eof bool // EOF flag
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	unread int // The number of unread characters in the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The input encoding.
+
+	offset int         // The offset of the current position (in bytes).
+	mark   yaml_mark_t // The mark of the current position.
+
+	// Scanner stuff
+
+	stream_start_produced bool // Have we started to scan the input stream?
+	stream_end_produced   bool // Have we reached the end of the input stream?
+
+	flow_level int // The number of unclosed '[' and '{' indicators.
+
+	tokens          []yaml_token_t // The tokens queue.
+	tokens_head     int            // The head of the tokens queue.
+	tokens_parsed   int            // The number of tokens fetched from the queue.
+	token_available bool           // Does the tokens queue contain a token ready for dequeueing.
+
+	indent  int   // The current indentation level.
+	indents []int // The indentation levels stack.
+
+	simple_key_allowed bool                // May a simple key occur at the current position?
+	simple_keys        []yaml_simple_key_t // The stack of simple keys.
+
+	// Parser stuff
+
+	state          yaml_parser_state_t    // The current parser state.
+	states         []yaml_parser_state_t  // The parser states stack.
+	marks          []yaml_mark_t          // The stack of marks.
+	tag_directives []yaml_tag_directive_t // The list of TAG directives.
+
+	// Dumper stuff
+
+	aliases []yaml_alias_data_t // The alias data.
+
+	document *yaml_document_t // The currently parsed document.
+}
+
+// Emitter Definitions
+
+// The prototype of a write handler.
+//
+// The write handler is called when the emitter needs to flush the accumulated
+// characters to the output.  The handler should write @a size bytes of the
+// @a buffer to the output.
+//
+// @param[in,out]   data        A pointer to an application data specified by
+//                              yaml_emitter_set_output().
+// @param[in]       buffer      The buffer with bytes to be written.
+// @param[in]       size        The size of the buffer.
+//
+// @returns On success, the handler should return @c 1.  If the handler failed,
+// the returned value should be @c 0.
+//
+type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error
+
+type yaml_emitter_state_t int
+
+// The emitter states.
+const (
+	// Expect STREAM-START.
+	yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
+
+	yaml_EMIT_FIRST_DOCUMENT_START_STATE       // Expect the first DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_START_STATE             // Expect DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_CONTENT_STATE           // Expect the content of a document.
+	yaml_EMIT_DOCUMENT_END_STATE               // Expect DOCUMENT-END.
+	yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE   // Expect the first item of a flow sequence.
+	yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE         // Expect an item of a flow sequence.
+	yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE     // Expect the first key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_KEY_STATE           // Expect a key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE  // Expect a value for a simple key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_VALUE_STATE         // Expect a value of a flow mapping.
+	yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE  // Expect the first item of a block sequence.
+	yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE        // Expect an item of a block sequence.
+	yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE    // Expect the first key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_KEY_STATE          // Expect the key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_VALUE_STATE        // Expect a value of a block mapping.
+	yaml_EMIT_END_STATE                        // Expect nothing.
+)
+
+// The emitter structure.
+//
+// All members are internal.  Manage the structure using the @c yaml_emitter_
+// family of functions.
+type yaml_emitter_t struct {
+
+	// Error handling
+
+	error   yaml_error_type_t // Error type.
+	problem string            // Error description.
+
+	// Writer stuff
+
+	write_handler yaml_write_handler_t // Write handler.
+
+	output_buffer *[]byte   // String output data.
+	output_file   io.Writer // File output data.
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The stream encoding.
+
+	// Emitter stuff
+
+	canonical   bool         // If the output is in the canonical style?
+	best_indent int          // The number of indentation spaces.
+	best_width  int          // The preferred width of the output lines.
+	unicode     bool         // Allow unescaped non-ASCII characters?
+	line_break  yaml_break_t // The preferred line break.
+
+	state  yaml_emitter_state_t   // The current emitter state.
+	states []yaml_emitter_state_t // The stack of states.
+
+	events      []yaml_event_t // The event queue.
+	events_head int            // The head of the event queue.
+
+	indents []int // The stack of indentation levels.
+
+	tag_directives []yaml_tag_directive_t // The list of tag directives.
+
+	indent int // The current indentation level.
+
+	flow_level int // The current flow level.
+
+	root_context       bool // Is it the document root context?
+	sequence_context   bool // Is it a sequence context?
+	mapping_context    bool // Is it a mapping context?
+	simple_key_context bool // Is it a simple mapping key context?
+
+	line       int  // The current line.
+	column     int  // The current column.
+	whitespace bool // If the last character was a whitespace?
+	indention  bool // If the last character was an indentation character (' ', '-', '?', ':')?
+	open_ended bool // If an explicit document end is required?
+
+	// Anchor analysis.
+	anchor_data struct {
+		anchor []byte // The anchor value.
+		alias  bool   // Is it an alias?
+	}
+
+	// Tag analysis.
+	tag_data struct {
+		handle []byte // The tag handle.
+		suffix []byte // The tag suffix.
+	}
+
+	// Scalar analysis.
+	scalar_data struct {
+		value                 []byte              // The scalar value.
+		multiline             bool                // Does the scalar contain line breaks?
+		flow_plain_allowed    bool                // Can the scalar be expessed in the flow plain style?
+		block_plain_allowed   bool                // Can the scalar be expressed in the block plain style?
+		single_quoted_allowed bool                // Can the scalar be expressed in the single quoted style?
+		block_allowed         bool                // Can the scalar be expressed in the literal or folded styles?
+		style                 yaml_scalar_style_t // The output style.
+	}
+
+	// Dumper stuff
+
+	opened bool // If the stream was already opened?
+	closed bool // If the stream was already closed?
+
+	// The information associated with the document nodes.
+	anchors *struct {
+		references int  // The number of references.
+		anchor     int  // The anchor id.
+		serialized bool // If the node has been emitted?
+	}
+
+	last_anchor_id int // The last assigned anchor id.
+
+	document *yaml_document_t // The currently emitted document.
+}
diff --git a/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlprivateh.go b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlprivateh.go
new file mode 100644
index 00000000..8110ce3c
--- /dev/null
+++ b/vendor/github.com/mattermost/mattermost-server/vendor/gopkg.in/yaml.v2/yamlprivateh.go
@@ -0,0 +1,173 @@
+package yaml
+
+const (
+	// The size of the input raw buffer.
+	input_raw_buffer_size = 512
+
+	// The size of the input buffer.
+	// It should be possible to decode the whole raw buffer.
+	input_buffer_size = input_raw_buffer_size * 3
+
+	// The size of the output buffer.
+	output_buffer_size = 128
+
+	// The size of the output raw buffer.
+	// It should be possible to encode the whole output buffer.
+	output_raw_buffer_size = (output_buffer_size*2 + 2)
+
+	// The size of other stacks and queues.
+	initial_stack_size  = 16
+	initial_queue_size  = 16
+	initial_string_size = 16
+)
+
+// Check if the character at the specified position is an alphabetical
+// character, a digit, '_', or '-'.
+func is_alpha(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-'
+}
+
+// Check if the character at the specified position is a digit.
+func is_digit(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9'
+}
+
+// Get the value of a digit.
+func as_digit(b []byte, i int) int {
+	return int(b[i]) - '0'
+}
+
+// Check if the character at the specified position is a hex-digit.
+func is_hex(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f'
+}
+
+// Get the value of a hex-digit.
+func as_hex(b []byte, i int) int {
+	bi := b[i]
+	if bi >= 'A' && bi <= 'F' {
+		return int(bi) - 'A' + 10
+	}
+	if bi >= 'a' && bi <= 'f' {
+		return int(bi) - 'a' + 10
+	}
+	return int(bi) - '0'
+}
+
+// Check if the character is ASCII.
+func is_ascii(b []byte, i int) bool {
+	return b[i] <= 0x7F
+}
+
+// Check if the character at the start of the buffer can be printed unescaped.
+func is_printable(b []byte, i int) bool {
+	return ((b[i] == 0x0A) || // . == #x0A
+		(b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E
+		(b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF
+		(b[i] > 0xC2 && b[i] < 0xED) ||
+		(b[i] == 0xED && b[i+1] < 0xA0) ||
+		(b[i] == 0xEE) ||
+		(b[i] == 0xEF && // #xE000 <= . <= #xFFFD
+			!(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF
+			!(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF))))
+}
+
+// Check if the character at the specified position is NUL.
+func is_z(b []byte, i int) bool {
+	return b[i] == 0x00
+}
+
+// Check if the beginning of the buffer is a BOM.
+func is_bom(b []byte, i int) bool {
+	return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF
+}
+
+// Check if the character at the specified position is space.
+func is_space(b []byte, i int) bool {
+	return b[i] == ' '
+}
+
+// Check if the character at the specified position is tab.
+func is_tab(b []byte, i int) bool {
+	return b[i] == '\t'
+}
+
+// Check if the character at the specified position is blank (space or tab).
+func is_blank(b []byte, i int) bool {
+	//return is_space(b, i) || is_tab(b, i)
+	return b[i] == ' ' || b[i] == '\t'
+}
+
+// Check if the character at the specified position is a line break.
+func is_break(b []byte, i int) bool {
+	return (b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029)
+}
+
+func is_crlf(b []byte, i int) bool {
+	return b[i] == '\r' && b[i+1] == '\n'
+}
+
+// Check if the character is a line break or NUL.
+func is_breakz(b []byte, i int) bool {
+	//return is_break(b, i) || is_z(b, i)
+	return (        // is_break:
+	b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		// is_z:
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, or NUL.
+func is_spacez(b []byte, i int) bool {
+	//return is_space(b, i) || is_breakz(b, i)
+	return ( // is_space:
+	b[i] == ' ' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, tab, or NUL.
+func is_blankz(b []byte, i int) bool {
+	//return is_blank(b, i) || is_breakz(b, i)
+	return ( // is_blank:
+	b[i] == ' ' || b[i] == '\t' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Determine the width of the character.
+func width(b byte) int {
+	// Don't replace these by a switch without first
+	// confirming that it is being inlined.
+	if b&0x80 == 0x00 {
+		return 1
+	}
+	if b&0xE0 == 0xC0 {
+		return 2
+	}
+	if b&0xF0 == 0xE0 {
+		return 3
+	}
+	if b&0xF8 == 0xF0 {
+		return 4
+	}
+	return 0
+
+}